Awww, she’s adorable! Do you think that the chick might have a slipped tendon?Little wibble wobble has upgraded to a sort of hop to get around. The "elbow/knee?" is red and irritated from her using it as her foot but she otherwise appears to be a healthy peep. It's hard to capture an image of but you can kind of see in this picture how the foot on the right hand side is elevated. When I have tried to bend the leg down she peeps a lot like she's uncomfortable but her hip seems to have typical motion so she may just end up having a bit of a peg leg if it's from a joint not developing properly.
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https://www.backyardchickens.com/ar...ith-a-slipped-tendon-one-chick’s-story.69353/
I dealt with this in a keet last year but was unable to resolve it. This person had a better outcome...