I have a backyard flock, including a 2.5 year old wyandotte whose feet are pictured below. Note the nail overgrowth and raised scales. She's the only bird with overgrown nails, everyone else's are a much more normal length. Their run is large and they spend plenty of time scratching.
I went...
Welcome to BYC! If you want to figure out the breeds of your chickens, here's a nice guide: https://starmilling.com/poultry-chicken-breeds/ You could also post photos, I'm sure many folks on BYC could ID them :)
@SmiYa0126 has a great idea. When you are looking at animal rescues, they will often call this a barn cat program, although the non-profit in my area calls it their "working cat program". It's a great thing to do since you would be giving a home to a cat that might otherwise be put down.
Are these photos all of the same chicken? I don't see anything amiss with the feathers of the first chicken. The missing patches in the other two photos could be normal from growth, since young chickens grow faster than their feathers. It's possible that there could be some feather picking going...