So what do your layers pellets contain for protein? Soya? As most soya is GMO so I wouldn't want to feed that
The ones I use have soya in the ingredients, but it is a veggie diet and GM free. GM free pellets are pretty easy to find.
Mine also eat mixed corn and whatever they find in the garden, plus plot veg, windfall apples and various other crops that go over, bolt or come with lots of outside leaves I don't want.
I also hate food waste, but its worth saying that feeding kitchen scraps or meat is not permitted by DEFRA here in the UK, so people need to bear that in mind. Sausages or deli foods also have salt, fat and other stuff that is not good for hens.