Welcome you have a good looking boy there. I recently swithed to the larger cage too and my cham quit eating everything but hornworms. thankfully they are in season and even though they are high in calcuim it is still not enough. so i shoot liquid calcium into tA hirm worm and he goobles it down. I offer him everything else everyday. Crickets, dubias, superworms, mealworms. Two days ago he started taking a couole mealworms too. I also leave out and offerby hand collard greens with has the most vit K and A then other greens. The thing is to keep trying and be patient. In adfition to getting rid of the moss and getting the lights right, i suggest you buy a shower curtain liner a thick one and seal the back and one side of the cage. Cut to fit and tape diwn on the outside. This will help with warmth and humidity. Also if the ac the coming thru the top, get an umbrella open it and tape it to the back to prevent cold air coming into it from the top. I kniw there has been some questions about posdibls mbd by the bent casque. I think your chams forearms look a bit big. Was thinking possible gout or mbd. i know it is expensive but a vet visit may be called fore. if you do get him to a vet fir a check up make sure ti take a fecal sample and asked for luquid calcium. Until you get the lights right start right now taking him out in the sun. Good luck. I hope my suggestions help.