I have one that will NOT eat a super, crickets and roaches only please, he says to me.
I have one that practically insists on supers, hold the crickets and roaches and pass the supers please.
I have one that says, mmm food, give me whatever ya got, but I'd especially like a roach.
I have two more that say, well that doesnt look like a stick bug, and I'm sure I ordered stick bugs for breakfast lunch and dinner.
Picky, Spoiled beasts.
I do try to make them eat a variety, rather than give in to their whims. I think its healthier for them to eat different things. Mostly they go along with it, cuz they havent much choice.
If you want your super eater to eat something else, then dont offer him anything but crickets for several days in a row. Eventually, he'll be hungry enough to switch back to crickets. Or offer him something else, like silkworms or butterworms or stick bugs or wood sows or.... anything to break the habit?