What is wrong with my chicken? Leg issues

[LulaBell]

It could be Mareks, but it also could be a bad leg injury. It seems more like Mareks since her foot seems numb, but I could be wrong.

I was thinking the opposite bc she has control over it. She’s not dragging it or anything.
I’m hoping you are wrong

 

[Wyorp Rock]

View attachment 1855376

There's B vitamins in the feed.
Off the top of my head I see - Riboflavin, Niacin, Folic Acid, B12, Pyridoxine, Pantothenate.