Be careful, a lot of chams will over eat. How old is your Cham? They eat like little piggies when their growing, check some of the care sheets on this sight for what should be average. But with each individual it's a ymmv situation. Easy way to tell your over feeding is to check the stool. Lots of undigested cricket parts probably means your over feeding. Then again my gravid females eat like crazy. Glad you and he are happy he's munching a bunch!
Didn't realize, your experience I'm sure your well aware of feeding practices, sorry to assume.