What breed is my chicken?

[Gray Farms]

Most likely cochin mix

 

[Frazzemrat1]

Agreed, maybe a cochin mix. Not a purebred cochin, as they have yellow legs.

 

[janiedoe]

A couple of hatcheries have langshans. Ideal and McMurray. Langshan have dark legs with pink foot pads. They also have feathering on the outside of the leg and straight combs. I vote langshan.
I hope you enjoy your new chick(s).