Yeah, I built a nice hand-crafted roll-away nest roost, at a comfortable angle where the eggs could roll gently downslope to the rear, with a covering board resting at a precise angle maintained by nails, that could be picked up to gather the eggs, in a place where they couldn't get to them. They proceeded to use the roost for a latrine, and lay their eggs on the ground, then eat them, shells and all.
Along with their cracked corn and laying pellets they eat table scraps, which often means meat scraps, so I think they're getting their protein.