Help. My FBCM keeps laying from the roost....

she does it almost every day now. I was tinking she had quit laying for the last few weeks but I have been catching the girls eating her eggs. Well today I found out why. she lays them from the roots and they break when they hit the steps... i thought they were kicking them out of the nest box. what should I do? If I put something under the roost it will block the pop door.Of corse they ALL roost in one spot above the door and NOT on the nice ones we put up for them on the other wall of the coop