My BR who is a great layer has suddenly started laying soft shelled eggs. She's laid 5 of them in this week. I thought it was maybe lack of calcium since I've always given her lettuce, carrots, fruit, etc every evening and she really LOVES all this and perhaps wasn't getting enough of the necessary layer feed?? So I stopped the treats a few days ago but still the same thing. She's also laid these last two eggs after dark at night if that makes a difference?? Can anyone help me??