I posted this on another forum and didn't have any takers. Hopefully someone here can tell me if this looks like any meat breed you've seen, or If this was a TSC mix up?
https://www.backyardchickens.com/t/1089303/tsc-cornish-rocks#post_16721591
https://www.backyardchickens.com/t/1089303/tsc-cornish-rocks#post_16721591