I have been raising chickens for 3 years and have never experience this. I have a 2 year old RIR that just started laying broken eggs all of a sudden for the past month now. She has access to oyster shells at all times and my flock is on fermented food. My other 7 hens are doing fine. No problems and their eggs are good. She seems to be healthy and fine -- just laying broken eggs. Any suggests on how to help her get back to laying a solid egg?