Mine are funny that way. There are a lot of things they only like hanging, or raw. One likes carrots cut round, the other only eats them if they are cut in long spikes. (no clue)
And they only eat spinach if I make a burrito out of it (roll it up length wise and glue it together with honey).
Sweet potatoes they like whole, with a little piece cut off the end or out of a baby food jar.
Green beans, they will eat them IF I pick them out of their mix and put them by themselves. But if they are with the other veggies, they won't eat them.
And if I don't give them a different plate/dishes/kitchette every night, within a few days they eat very little
They will only eat fresh salads with white cheese sprinkled on top (or meal worms).
Silly little guys, I think they just do this to test my memory.