I'm using commercial layer pellets and that's working out great but, as an example since I was buzzing around here doing stuff my gals got:
Squash seeds cut in half and some walnuts too - both grown/gathered by me
Oh, are there worms under these boards? Yeah! And pillbugs too..... let's check...
I give mine lots of greens. They get layer pellets that are available all the time, plus I give 'em greens and vary it between stuff like collards, grass, chard, wild lettuce, comfrey, etc. Plus they get goodies, they got a little popcorn (that we grew) and some walnuts (that I gathered) today...