I like to imagine all the lottery food (the liked ones) are just treats since almost all the items pixpets approve of seem to be junk food save for some exceptions, like the mandrake, so of course they'd take those over icky vegetables!! (I kid, I like my veggies, but it just reminds me of a parent trying to make their 5 year old eat their broccoli or something)

I feel like pixpets are kinda in that (older) pokemon territory where them eating each other is implied, but never outright said and all creatures are just omni/herbivorous for those reasons bc who wants to see a sylveon eating a pikachu... (but it's most likely for simplicity sake for hoards, otherwise it would probably be like Flight Rising where you have to gather all the food for certain dragon diets, like plants, seafood, insects, and meat, and probably inevitably lag behind in at least one or two of those groups when you realize you have more insect eaters than the other diets....)

but i agree with senti about pellets basically being their kibble, and do I love the idea of cooking up goods for my pixpets! idk why, but i always liked crafting in games, esp if its food related. but what I really wanna know is, what do some of the game original fruits/plants taste like, like voxel fruit...