Feathers on a clean legged birds shanks/feet is a serious defect. It is usually something that is not easy to breed out. If it was just one bird you might be able to work with it. Get rid of that bird though. I had a Leghorn bantam come up with a substantial row of feathers down the outside of the shanks this year. It came from a breeding pen that I put together from the birds in my closed flock. There has been no new blood in this flock of leghorns for 30 years and in that 30 years I have never had a bird with feathers or even stubs on the legs or shanks. Just mentioning this because it can happen. I have seen feathers on shanks of waterfowl and to my knowledge there are no ducks with feathers on their legs....none. So.....things can happen, but if you have more than one, you have a serious problem.
There are lots of people that have reputations as "breeders" on this site and lots of people believe they know what they are doing, but the truth is there are very few real breeders around. There are a lot of people that are good at hatching though and that does not make them a breeder in my mind. Being successful at breeding chickens is a lot more than spouting genetic formulas and sounding like you know what your are doing. The proof is sustained positive results.
I can't believe some of the things people think are true, just because they read it online. There are people on the site that talk such a good game that I almost believe them.......hahaha Check out their backgrounds and see what their real results are. I'm not sure that I would believe anyone with less than 10 years of practical poultry experience and 10 years is really not a lot of experience in this hobby.
Walt