What Digby Will and Won't Eat

If you've been following along, you will know that I'm trying to get Digby to eat something other than just seed. I've had her for almost three months and have tried several foods. The following is a list of what I've tried:

Pellets
Zupreem Natural: Refuses. She will taste them but will not eat them and throws them on the floor.
Harrison's: Ate half of one. She ignored the rest.
Roudybush: Eats them and likes them! (See the post from 13 January)

Fruits and Veggies
Lettuce: Likes. She prefers the purple or red lettuces, and the must be cut into little pieces.
Collard greens: Will eat. She will eat collards, but not with the same gusto as she eats the lettuce.
Apples: Likes. She requires them to be cut into tiny pieces though.
Green peppers: Eh. She nibbled on it until she discovered the better red peppers.
Red peppers: Likes. She really liked the red peppers.
Cucumber: Also eh. She started nibbling on it when I offered it while I was holding it, but she decided my finger looked yummier and bit me.
Pomegranate: Loves. She surprised me liking these so much.

Other Things
Nutri-berries: Likes. If they are left in her food dish, she will pick out all the seeds. If I give them to her out of her cage, she'll eat the entire thing.
Avi-cakes: Likes. Prefers Nutri-berries.
Sprouts: Will eat. She will eat them, but only if I am also eating and she's out of her cage.
Rice: Will eat. Not her favourite, but she will certainly eat it.
Pizza: Likes. I feel bad for putting this on the list, but this was the first food she ate for me other than seed. She likes pizza, especially the crunchy edge of the crust.
Millet: Loves. She will even take this from my hand.
Seeds: LOVES. This is the reason I'm trying all the other foods. She will happily eat nothing but seeds. Doesn't matter the brand. She'll switch between brands easily.