Hello
@Sylvester017, you have a nice setup for your girls. My chickens forage all day too and eat feed as supplementation. They are happier when they search for their own food - I think.
Finally found eggs in two out of the four rent-a-coop boxes today. As a bonus, a broody hen settled in one of them. The boxes are mounted at different height levels. Looks like they favor the ones closer to the ground.
In my experience, I found that hens prefer a hidden, private box with a bowl-like surface for laying eggs. I think if you provide walls for all of your pans the hens will start to use two boxes. The other two will serve as spacers.
Like I said in my original reply, I'm experimenting. I also have one nest made out of a cardboard shipping box. I replace it every 3 to 4 months. The cardboard box seems to be their favorite, two to three hens wait in line for it at a time. I'm also trying a basket with bedding that's hidden under that same hen house. So far, it's a fail. Another experiment, I put an old wooden drawer inside another hen house, I found one egg in there today. So far so good!