Hi all, My first post I am a newby on chickens and enjoying every moment. My chickens are approximately 18 weeks and I got my first eggs today, 2 whole-but one with a hole in it and 2 smashed in the nest box. I have them on grower still and am going to start layer feed first thing. I'm assuming this will help with the fragile shell???? Just want to get opinions, is this normal? Thanks in advance (TIA)!