I have six hens. I recently started feeding them red pepper flakes in hopes of kick starting egg production. It worked, and 5/6 are laying. One is finishing a molt. However, one hen laid one egg with a partially soft shell. That was a week ago. She has not layed since. She is a two year old golden spangled hamburg. Any idea as to what is going on? She seems healthy, bright red comb, as energetic and alert as ever. I got her when she was 18 months old, and she only laid 2 eggs before going into a very long molt, so I don't know what her laying history is.