If you're unable to get pictures soon, it'd probably be helpful for you to go ahead and read over this
https://www.backyardchickens.com/threads/how-to-fix-curled-toes-in-chicks.1250947/
If the toes look different, it could be another issue. If they're able to get around, I don't suspect it's...
Any type of hatch deformity is best addressed as quickly as possible. It's generally advised to treat in the first week of life. As they get older, their bones harden and it's more difficult to fix bone issues. So it's one foot on each chick? Is it all 3 toes curled under while they're standing...