I have been finding an elongated egg in the nesting box, I believe it's from my little RIR. The shell is very thin & fragile. I have even found the remains of a broken egg in the box too. The other girls are laying large, strong shelled eggs. After picking her up, I did notice that she is very light weighted. She eats well and seems to be the leader of the group. Is there something I should be concerned about?