Yes, that is how it has happened here. It is a chicken brand new to laying. Once she passed one normal egg and one soft shell off the roost. The other time she passed a normal-sized soft shell and a tiny marble-sized soft shell off the roost. The two times she passed two eggs there was no egg the next day.
When she has made it to the nest box, there has been ONE egg, and the egg has always been normal.
When she has made it to the nest box, there has been ONE egg, and the egg has always been normal.