Feed in the tub he lives in and not too many at once, see how it goes.
note: try to offer food in the morning after the light has been on for an hour or so, lizards bask first thing to warm up before hunting/eating. make sure hes warm /active before offering food. If its having trouble catching small live crickets, pull the crickets large back legs off first.
pic of his living tub and describe setup please, p.s use the "draw it" button if you want to draw it because you dont have a cam etc.