Laurie,
This is a hard topic to give good advice in. I'm not gonna tell you if you feed to much ore not. I only want to tell you some things I think that are important with growing up chameleons. I think there is a big difference in growing up chameleons in captivity and
them growing up in nature. In nature they benefit from growing as fast as possible as this lowers their chance of being eaten and the improves the change for the species to survive. So in nature they will eat as much as they can and grow as fast as they can.
Problem in captivity is we can't give them all good stuff they will get in the wild. So we try to compensate. To achieve this I believe it is good to let them grow a little slower with as good food as possible and feed them not every day. In this way I make sure they stay interested in food and start hunting. I'm not sure this is the right way but in the past I did feed as much as possible and my chameleons did grow very very fast. But in the end I found they where not as long living as I wanted (specially my females). Now I feed less they still grouw quite fast compared to other people I know but they live longer and seem much stronger to me.
On the other hand feeding a lot and growing very fast increases the chance of MBD as they grow faster they need to get more calcium for their bones. I did have this problems in the past with my hoehnelii's.
My only advice whould be to also have a day without food this is really not bad. Chameleons in the wild don't find food every day.
I hope this helped a little bit.
Further it's good to hear he eats that good. Quadricornis is a lovely species to bad the don't seem to fit real good in my chameleon room.