Chamgirl-
It sounds to me as if he is gaining weight which is good! WC's are almost always carrying parasites and I have each and everyone of my wc's checked by my veterinarian when I receive them. I have had a few shipped to me with no parasites/worms, which is very rare to find, but happens.
My wild caught Ankaramy's are new (imported to me January 2006). They are all different sizes and weights, and weight will solely depend on the age of your chameleon. All of mine have been treated for parasites, and are all eating very good. I will weigh again my wc's for you this week and let you know their weights, but I'm not sure that will really help you as like I said, age is a major factor and my ankaramy's will not be that great of a comparison, and have just recently been treated themselves for parasites.
Has he shed? If he is shedding, that is a good sign as well. What I would recommend if you are concerned is call your vet and see if you can just bring in a fresh fecal sample for him to test without actually having to bring him in for a visit. My vet will do this for me and it will save you some money - all you will have to pay for is the lab testing. At least this will give you some ease of mind. If it the results are positive, then you can get the proper treatment... If negative for parasites, then just make sure he is eating a good diet and perhaps give him a variety of different types of prey, as sometimes chameleons will get bored of eating the same thing every day. I know I would!

I alternate crickets, superworms, mealworm, waxworms, etc., so they don't get bored of eating just crickets.
But, from what you have told me, he seems to be gaining weight, which is very good and he isn't losing weight either. You didn't mention his approximated age, but adult chameleons don't always eat everyday. So if you believe he is a full grown adult, it is not uncommon for them to not eat for a few days.
After treatment, I always bring in a fecal sample to my vet to verify that my new quarantined colony of wc's are clear of parasites.
I hope this helps... Let me know how he does and if I can give more information.
Let me know and good luck!
Edit: By the way, I just looked at the picture of your Ankaramy on your page.... he looks good to me

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