I have a new layer that her first 3 eggs looked great but then I got a thin shelled egg from her yesterday and a shell less egg today. I switched brands when I went to layer feed a couple weeks ago to a layer crumble but it was like almost dust and had soo much waste that I switched to pellets which they seem to be going through slower but of course way less waste. I also have oyster shell at all time which they don't seem to want to touch. today I fed them scrambled eggs with the shells in but I'm so worried about an egg breaking inside her. I have one two layers out of my 6 chicks so far and one is laying the thin shell. What can I do to up her calcium? should I be worried?