Why are my chicks wings different the the rest?

[Peachii]

Hello everyone, my chicks hatched about a week ago or so and I noticed this one's wings are different than the rest. Or any other chick I've seen for that matter...is it maybe a rooster?

I'm just trying to find or what/why?

Thanks for any help!

 

[nuthatched]

Split wing, I think it's called. I'm not sure why or how to fix it.