hello! I have 4 laying hens. 2 of them were not laying for quite some time. but now that we are having longer days, I have one more laying and Im sure the last will be to follow. So all week I have had good eggs. 3 a day no problem. However yesterday I found one in the coop that was a squishy egg.and then again this morning there was one out in the chicken yard. I have read about them and believe they are shell-less eggs. I have oyster shell out for the chickens. I give them meal worms every other day. Corn a few times a week. could any of this have anything to do with why they are laying these eggs? I know that it is the newest layers since my reds (the ones who have been laying) lay in the same spot every day and I was out the working and seen them laying. Anything I should be worried about?Or do differently?