Following are excerpts of an email exchange that I had with Dooley1 (Kevin) back in August of 2013. I wasn't satisfied with the growth rate I was experiencing from the quads I hatched and was looking for common variables used by keepers who were getting faster growth rates. Housing quads outdoors and using commercial gut-loads were two things I was not doing. Maybe other keepers might find some value in the following exchange. For the first 9 months with one particular clutch, I didn't use any commercially bred crickets.Kevin's responses are italicized.
From August 2013
I was being extremely cautious about not wanting them to get too much D3 from commercially bred crickets since most suppliers use vitamin D3 fortified gutloads. Since most of the feeders I was using either had to be cup fed or hand fed, I'm convinced the quads were not eating as much as they would have been had I been using the most easily free-ranged feeders, crickets. Since I've started using crickets, they've grown at a faster rate. However, as I mentioned before, since you are housing the quads outdoors, another reason it makes sense that yours grow more quickly is because yours are exposed to significantly higher temps (higher temps = higher metabolisms).
The outdoor housing did not affect their growth rates. I know this because they were raised indoors and not exposed to the outdoors until May, and were big already at that point. I also cup fed them when they were small. Also, my house was "cold-ish" in the winter...mid 60s with no supplemental heating other than the CFL bulbs on them. I think the difference was crickets.
Please refresh my memory. You are using Zeigler Monster Cricket Diet (which contains D3 and preformed A) to gutload your crickets, correct? Laurie hadn't heard of that product before and I've never used it. Did I ask you before if you have a nutrional analysis of that product (specifically how much D3 and preformed A it contains, e.g. X I.U. of Y per kg of product)? Since you house your quads outdoors, and since you've never had any of your quads get edema, I'm guessing that the Zeigler product probably has very little D3. Of course, a higher metabolism would also affect how quickly the D3 would be processed too so the liver wouldn't be overloaded with it as much as presumably it might be at lower temps.
I do use Zeigler Monster Cricket Diet. I sent you what was on the label in an email previously...but that is as much as I know about it. It was based off of my experience with lateralis and other species. My quads are housed indoors all year except for late May thru early September. Also, I have had quads get edema. It was only during pregnancy though. After the eggs were laid it immediately went away. I was not worried about it though to be honest. A little edema does not scare me. A lot of it, or seeing it chronically would. It is not an exact science and each animal is different just like people, even when you treat them the "same".
Have you used that product on any of your quads that you might have kept indoors for a long period of time or have you ever noticed an edema in one of your quads over the winter time (I assume you still gutload with the same product over the late fall and winter when they are inside)? I think I remember you saying that you simply don't worry about stuff like this.

Maybe you've simply been fortunate (I'm not saying that in a derogatory manner at all as I've been fortunate about many things with chams over the years) and found a fantastic gutload that not only works for your carpets but also for a montane species as well. My bet is that it has very low D3 in comparison to many of the other gutloads out there.
I'm sure I've been lucky in many cases...but yeah I don't worry as much. If you fret over every little thing with chameleons you'll drive yourself nuts.
Kevin
I get confused about the various quads you've had but know that you've raised some neonates and experienced fast growth rates. I thought you kept them out longer than early September too, but now I know you keep them outside for just over 3 months. It does seem though that keeping them at higher temps for those 3 months might increase their growth a little because, being cold-blooded, it should result in a higher metabolism and therefore cause greater food consumption. Regarding the ones that were raised indoors and already big before you got them and put them outdoors beginning in May, how big were they and what were their ages at that time?
The ones I have outside now are roughly the same size as when I first put them out. They were almost full-grown at 11 months.
So, you cup fed crickets when they were young? I free-ranged fruit flies, mantids and bean beetles at first, then I started cup feeding other feeders (mostly dubia roaches and black soldier fly larvae) as the fruit flies were no longer big enough for them. I definitely notice a greater overall consumption of insects when I free range as opposed to cup feeding. Must be a bit boring to see feeders just go around and around in a cup.

Certainly it's a lot more stimulating for them to see insects from different angles than just looking down on them from above. So, how old were the quads you raised from neonates before you started to free-range crickets?
The funny thing is that I go back and forth based on the chameleon. Some will cup feed great & then suddenly not seem as interested, or vice versa. I just switch it up based on their behavior at the time. For the most part they cup fed though, except for the male when he made the transition to the adult cage. After a few weeks he was back to cup feeding though after he settled in. They seem to get trained and run to the cup when you throw the crickets in. Like you said-it may be boring to some and they just don't seem to get it. I free-ranged crickets totally once I put them outside in May.