New chicks scooting on bottom.
Splayed or spraddle leg is also common when their legs are too far apart. Bringing them closer together with tape or vet wrap for a few days may help. I would also recommend poultry vitamins, since deficiencies at hatch are common. Make sure they on on a non-slip surface which makes it easier to get their footing, not on newspaper. If you can post pictures, it may help. Here is a good link to read: