Me neither, only 11 here now, down from about 45. I read its an abnormality that can be caused by stress. She is in a 10x29' run so they aren't over crowded. Its called a "wrinkly egg".
What do you do with the egg production you must be getting? I struggle to sell all my eggs sometimes. Lots of folks like me selling em. We just raised our prices to $4 a doz up from $3 and folks whine... Or maybe its just the wife...