Hi, sorry you're having this issue. The other greeters have asked some good questions, hope answering those gives you an idea of how to handle the problem.
Hello, and welcome to BYC! I'm so glad you decided to join our friendly and helpful community
If your hen is going out of her way to break open the eggs it's very difficult to teach them to stop. Have you tried to roll away nest boxes?
Hey there JC!
Welcome to the BYC community. We are happy you have joined us.
The egg eater I had got rehomed to my granddaughter as a single lady. They allow her to eat her eggs.