One of my RIRs (Spicy) has been laying eggs that are like a sheet of brown paper with an egg laid on them. They are on Layena layer crumbles, have oyster shell as free choice, and free range about 12 hours a day. I'm assuming to harden up her eggs, she needs more calcium. So, should I start other snacks like cheese, yogurt, broccoli to get more into her? All of the other hens are laying normal eggs.