Hello and welcome to BYC, You found an Awesome poultry Forum to be a part of with many great knowledgeable members who are more then willing to jump in and help you with any questions you may have.
Welcome to BYC!
It sounds like your rooster may have bumblefoot. You can find a lot of info here about that. As for feather loss, it is usually caused by feather picking or poor nutrition. Feather picking is usually caused by boredom or not enough space in the coop/run.
You may want to make a post in the emergency forum to get information that is tailored to your situation.
Best of luck!
@janiedoe has given you a good idea, here's a link to the ER forum so you can get some help with your rooster's foot: Emergencies / Diseases / Injuries and Cures Including pictures will help with getting some advice.