They do make booties for chickens, might be hard to fit him til he's full grown. You could probably trim them down to fit better where the toes are missing.
https://www.amazon.com/Birdy-Bootie-Superior-Cushioning-Protective/dp/B01B8Y3EKY?th=1
It would be good to check those feet regularly, depending on how she walks and kinds of surfaces, bumblefoot could be an issue. I'd want to find it early if it happens.