I think yam chips are fairly tasty. Banana chips are more meh, last few batches we tried tasted like stale potato chips
As for the clean animals thing, the ancients seem to generally frown on eating predators and several traditions suggest there are health reasons to avoid this. Maybe the taste thing is part of it too. Its been noted already that pigs and bears taste much better to us when they've been on a veggie/berry diet.