I forgot another change we made. Up until a few years ago, we always had single nests. Our last flock, we ended up with some really broody chickens. We had several that were broody more than once in their first year. With age, they eventually became less broody. They all wanted to lay in the same nest and they all wanted that same nest to be broody in. They got really cranky about it, too. They'd stand in line for a long time and even climb on top of the broody to lay. I noticed they weren't getting along out in the yard, either. They were fussy and pecking at each other. They can hold a grudge with each other! So, I went with a community nesting area. If someone is broody, another chicken can just lay next to her. It really improved the way everyone got along.
If I had a broody on fertile eggs, I would have just moved her to her own housing, but these were chickens on infertile eggs.
In the future, if I didn't have a community nesting area, I would build nests that were double width.