My pekin has had a lot of foot issues and my avian veterinarian has recommended grass outside, 4-6 inches of clean regularly fluffed straw inside the barn (or coop), and several layers of towels when she is inside. She told me to avoid all boards, gravel, and rocks. Following the recommendations has helped a lot, and even solved our problems when she was younger.
Unfortunately, I have a lot of experience with an unwell pekin. I've just spent the last several years devoting myself to keeping one alive. She's 7 now and I feel we've gone through everything.
My avian veterinarian has also told me that "food production animals, bred for meat or eggs, often have issues because of growing too quickly or overactive reproductive systems." Their bodies don't care if we love them like pets or not. Sad, but true.