It was not a predator, it was either my Easter egger, which is the one I think it was or one of the other hens. Like my lavender orpington.
I also been told that the mom would get rid of eggs that she thought were not viable, so it could have been her getting rid of the eggs that the other chicks laid there, before I marked the fertile eggs that we received from a friend. But I do know that at least three of the eggs were fertile that was cracked or destroyed my lavender orpington step on two crushed one which was fertile, while laying her egg on top of the pile. I had thought all the other chickens had started laying in the two other nesting boxes that were separate from these. I did not know that I had to quarantine her, this was my first time so it was a hard lesson learned. But to make sure the other eggs were not hurt or destroyed I was advised here in another thread, to put them in the incubator which is what I did.