Second time this week!!!

This morning for the second time in a few days I found an egg in the coop in the morning, completely eaten. I suspect one of my girls has started laying from the roost. But today there was another, very misshapen, soft-shell egg in there too. The odd egg, I suspect came from my BO, who is probably laying her first egg, but the only other chicken who shares that roost is Snuffy, my white leghorn, who has been laying quite nicely in her nesting box, and I still get an egg from her every day. So any ideas what's happening? How can I get her to stop laying on the roost?! IS it possible for her to be laying 2 eggs a day?! I let them out of the coop just after sunrise (6:30) so they aren't in the coop very long in the morning... I just don't know what to do...I'm afraid they are all going to become serial egg-eaters because of this!