Oh there is definetly an underlying health issue.
I have a Veiled, and he has a pretty severe case of MBD. And recently I found out that on top of that I was not giving him enough water. This is my first chameleon and I'll openly admit that I didn't do my research before I got him and now he is suffering for it.

I feel awful but I have brought him to the vet twice and completely overhauled my husbandry, so hopefully things will improve.
Anyway, I am feeding my crickets Flukers orange cubes (vitamins, food and water in one) and lettuce, apples, carrots and various other veggies.
I feed my superworms apples for moisture and an oatmeal mixture. Butterworms get apples , and silk worms get lettuce atm, until I can get more chow.
What could happen if he is overwatered?
Thanks guys, I really appreciate it!