Nibs loves squash of all kinds (including pumpkin - she went nuts at halloween!), collard greens, and kale. She absolutely hates parsnips and wont' even go near the food when I give them to her.
The little guy will eat anything you put in the tank. If it hits the food dish, it's gone within seconds. His favorite has to be strawberries, but he rarely gets them.
Colard greens ,mustard greens and crickets oh and squash is chimeras. This will sound funny but they really like dandilion flowers picked fresh from the yard (no sprays used on them)
For vegetables my beardies love buttercup squash. I don't give it to them as a staple but when I do the go straight for it. The also go crazy when they see superworms.
Orangey-colored foods... Blazey just loves her butternut squash and butter worms.. Maybe she likes butter-named-foods. Nah, I think its the color. She will toss her collards out of the bowl for the squash. Does the same for carrots, but she doesn't get them often.