My girlfriend has a male sub-adult Veiled Chameleon who has decided to stop eatting(or atleast cut-back a lot). As far as I know nothing(temp, lighting, etc) has been changed to cause this. If anyone can shed some light on this issue, or give me some tips to get him back to eatting I would greatly appreciate it.

Some background info:
-He was purchased in March of this year from a well known Cham breeder at 6 weeks old.
-He did have MBD but after treatment has been fine.
-He is housed in a 18x18x36 Screen Cage.
-Previously he fed on approximately 12 crickets and 5 meal worms daily.