Chirping and very alert when not resting. she is not using one leg she did it use to push out of the shell yet...
I thought that leg looked kinda funky. Any other pips in the other eggs?
You may want to get it out sooner than later to get it up and moving around.
Here's a great article on leg issues. https://www.backyardchickens.com/articles/leg-foot-and-toe-issues-in-poultry-of-all-ages.68093/
Hopefully it's nothing and just needs time to get up and going (not uncommon!) but nothing wrong with being prepared and knowing what to look for.