Two of our 10 chickens are Red sex-link hens about 2 years old. We believe they just molted this late winter, and they have been laying for about 2 months. At first we only saw about an egg a day or every other day. Now I see about 2 eggs a day from them, but one of my hens keeps laying very thin eggs, so thin that I find it split open and the yolk spills on all the other eggs. The other egg isn't quite normal looking either, sometimes it's more oval, had a double yolker yesterday, and I saw an egg that looked like the shell had ripples on the one end (like making a sloppy soft serve ice cream cone). What should I do? Will the eggs straighten themselves out? Or should I give them calcium like Oyster Shells? I already gave them all my other hens crumbled eggs shells(so they could get the calcium from the younger hens) But I haven't seen much difference.