I think they have Bumblefoot :(

[sshore]

I'm just wondering if my chicken has it so bad she should go to the vet or if you guys think I can treat her at home. I already lowered her perch to mitigate the problem but I would like some opinions.

 

[PatrickRoo]

You could probably treat her at home, it doesn't look too terrible. https://www.tillysnest.com/2015/12/non-surgical-bumblefoot-treatment-html/
You may want to read this on how to perform a non-surgical Bumblefoot treatment on your chicken.