We’ve been raising chickens a few years now but lately I’ve noticed that the eggs we get seem “off”. When I boil a egg, fresh or not, they don’t peel at all. The egg white seems almost under done despite how long they boil. I just purchased a doz eggs from the local store () and those eggs peeled perfectly. I’m wondering if my poor chickens are too old or missing something in their diet. Youngest chicken is 3 years. Any advice would be appreciated.