As stables i use dubia roaches and Crickets... for treats i use hornworms and silk worms... i don't see why your chameleons behavior would change unless your giving him feeders such as wax worms or too many meal worms, also avoid feeding "pinkies" or feeder mouses as they are very fatty and cause problems such as gout.
good choices include:
gutloaded terrestrial isopods, gutloaded and calcium dusted crickets, gutloaded silkworms, gutloaded butterworms, indian walking sticks, blue bottles....