Frequent soft shell eggs... Why?
i have never had this problem. I was going to say to put out oyster shells for extra calcium, but it looks like you already are doing that.
I would say just wait and see what happens, young birds often lay "messed up" eggs when they first begin laying. If the problem persists even when they are full-grown, I would look for a vet.
Most of the time a pullet goes through a certain routine when she starts to lay. About a week before she lays her first egg she starts checking out potential nests so when that first egg is ready she knows what to do. I find having older hens already laying helps with this. But sometimes a pullet will drop an egg wherever she happens to be, on the roost or just walking around. It’s as if she has not yet learned to control the process. Once she gains control she will find a place to lay the egg but until then you can find an egg anywhere.
There can be something else at work too. There are different triggers that tell a hen when to start an egg through her internal egg making factory. It takes about 25 hours, give or take a few hours, for the egg to go through her internal factory. One of those triggers is daylight. If it is too late in the day, the egg should not start its journey so it doesn’t have to be laid at night. I think this is a big reason we so often find pullets laying eggs from the roost. Her triggers are just not working right.
It sometime stakes a while for them to sort all this out but normally not more than two weeks. What’s kind of remarkable to me is that so many actually get it right to start with. I’m hoping one of your pullets is just going through a debugging process and will sort her egg making factory out.