Yes, my chicken especially love cooked corn. Just be careful about temperature, and search it up before to see if it's dangerous for them. And I can tell that you take good care of them, but just in case, never let it replace their chick food, no matter how enjoyable it may be to watch them...
One of my chickens got a scrape on her foot, and when we washed it off in warm water, she was perfectly content. Just make sure you dry the foot off thoroughly and DO NOT get any of her fuzz wet.
Get a bowl of warm water-not hot, but warm, and have somebody else hold her. Make sure that they hold her in a way that her feet dangle down and her wings are pinned. They should dip her foot in the water, and you can rub it off.