Here's a link from BYC i found, and will give some good info! For your sake, I hope it turns out to be a barred rock, but with the legs that look like that, I dont think I'm wrong.
https://www.backyardchickens.com/forum/viewtopic.php?id=181828
https://www.backyardchickens.com/forum/viewtopic.php?id=181828