I could search and read all kinds of tips but how about you? Egg eaters. What do you do besides removing the culprit(s) from the coop? I integrated some birds and had 3 eaters. They were removed and put with my GNH's because I only have one GNH hen. I still have an egg eater in the main I need to ID though. So, is there a way to "cure" this?
What I've heard (though thankfully have not needed to test out for myself yet) is to buy some ceramic fake eggs and put them in the nest boxes. Make sure you collect the real eggs out of the coop multiple times a day, but leave the ceramic ones in there. Supposedly the egg eating chickens will peck at the ceramic eggs, not like that it's busting up their beaks and give up on the idea. In a perfect world, but it's definitely worth a try. Let me know if it works. It sounds logical at least.