Hello! I have included many photos at the bottom. I have a two and one quarter year old Red Sex Link (named Ariana) who has always laid enormous hard-shelled eggs. In the last two months, however, she has laid continually worse eggs. In mid-April, she started every two days or so laying eggs that look hard-shelled, but when I picked them up, my thumb broke the shells. Now, in June, I open the nest box and there is a little paper-thin "skin" next to a pile of wet egg. None of the rest of my flock has problems with their eggs. My adult flock eats Purina Nutrena Layer Pellets 16%. Every few days I force-feed Ariana crushed oyster shells as a calcium supplement. She won't eat them if I don't shove them down her throat. In the beginning, this seemed to make a difference, but now it doesn't. Ariana has never moulted in her entire life. When we bought her as a chick in April, 2015, as soon as she was fully grown, I trimmed her wings as well as the other hens' wings. I haven't since. Even now, She still has those exact same trimmed wing feathers. All her feathers are extremely frayed, being the same feathers she's had her whole life. I tried to pull one out to take a picture, and the shaft literally pulled apart. her back is covered with bent/snapped in half feathers. The really disturbing part, however, is that she has no pin feathers anywhere on her body. she's breaking feathers and losing them, but not growing any back. Suggestions for how to get her to grow back feathers and get hard-shelled eggs would be much appreciated!! Thank you in advance! Pictures: Ariana's original eggs. Her's is on the right.