I have successfully fixed feet like this. Take a bandage and cut off the two sticky tabs (throw away the absorbent center). Remove the backing paper, spread the chicks toes into a flat normal position, and stick them on the bandage tab. Then remove the backing paper to the other tab and stick it to the top of the chicks foot, be sure the two sticky tabs grip each other between the toes. You can trim around the edges so the chick doesn't trip. Do the same thing to the other foot.
IMPORTANT- go buy some Polyvisol baby vitamins from the drugstore (make sure they say "Without Iron") and give the chick one drop once or twice a day for 3 or 4 days. By then you should be able to take the "booties" off and its feet should be corrected. Most feet and leg problems are vitamin-deficiency related.