I know with cricket gutloading they say avoid spinach and broccoli. My cham does not like eating crickets anymore, but i used to gutload with Kale, Collard greens, mustard greens, romaine lettuce(not iceberg) carrots, apples, mangos oranges, sweet pepper, squash, cantalope. You can try all of these and see what they eat and what they don't eat. I was hoping someone would chime in here on this.