Too big?

Hello all!
Thumbs is a five month old veiled chameleon. His enclosure was getting too cramped so we upgraded to this... 18x18x36. You can see Thumbs in the upper right hand corner. It's still a work in progress, but my question is, is it too big for right now?
P.S. I know I need to get the moss out of there (trying to figure out a humidity/drainage system) and more perches are on the way!

No, not too big. If anything it is too small. It looks good for now, but he will need a bigger one. How are you feeding him?

Just put him in there so will feed him for the first time in that enclosure tomorrow. I hand feed worms anyways but the crickets ill probably do a few at a time and put them on the higher leaves (he eats them as soon as he sees them). I know the moss is an issue; don't want any impaction.

Not too big. As long as he can find food its all good.

People are gonna give you crap about the substrate, but I have never had a problem with using it. But there are risks involved.

Looks good man

I saw a cham at Petsmart yesterday EATING that exact substrate. Just saying.