Does look like it. Here is a thread that explains one way to cure it.
https://www.backyardchickens.com/threads/bumble-foot-cured-with-homeopathy.1607135/
You can read thru other threads that approach differently. Home surgery to remove the infected portion.
I just read recently, (the above) so that is why I posted the above one for you to read and inform yourself to the possibilities, and options.
WISHING YOU BEST,,,,,,,,,,,,,,,,,,,,,,,,
