The everlasting question is how much space do you have? How do you have the space set up? Often times what was more than enough space for chicks becomes not quite enough space for adult birds.
But often times, the space is just one big open space - really the floor of the run is the only part used. Often times just one feeder, and one waterer. If you are the least bit tight on space, this can seem counter intuitive, but what is needed is a lot of clutter.
Enough clutter, that it is difficult to walk around in the coop. Add mini walls, ladders, roosts, platforms that chickens can get under and on top of. Set up mini walls or crates on their side. This allows chickens to bow to the Queen.
In chicken society, when two birds meet, one bird is the lesser bird, she moves away from the queen, out of sight is best. In an open pen, the lower bird cannot move out of sight, so often times the Queen pecks her again, harder. The Queen thinks she is being disrespectful by not disappearing. I have seen a 6 week old chick, eating by a bird, get a small tap, run away behind something, and come back and eat peacefully beside her seconds later, she 'bowed' to the Queen.
Not only is the victim not getting laying space, I would suspect she may not be getting enough feed. As you add clutter, stick some feed bowls behind a mini wall, positioned so that if a bird is eating at one station, they cannot see a bird eating at another. I have 4 stations set up for 9 birds. I have a multi generational flock, and this makes sure everyone gets enough.
Mrs K