My means of breaking BB's egg eating habit are so far diet (more calcium) and scolding and swatting her if she pecks an egg. A lot of people think you might not be able to get through to a chicken this way but they are actually quite intelligent. They were the first animals to be trained with a clicker. I am thinking if things get real desperate, I might try to add clicker training. Maybe like... she pecks the egg she gets swatted. She leaves the egg, she gets a treat and a click. That might work. Yeah I probably sound absolutely insane but I'm a little desperate.
Here's what you're all looking for though.