I have an idea on how to make your own people kibble.
first in a big blender blend together everything you need (all the vitamins nutrients etc) (i am not entirekly sure what this is, but do research)
then once it is blended together, mix it in a bowl with flour to make a dough, then cook it. Once it is hard, cut it into little tiny pieces, boom ppl kibble.
oh btw you might want to add some vanilla extract or something a bit sweet