Hi Tessh,
How old is your chick? My rooster, Scratchy, was incubator hatched and all the toes on one foot were curled under
I made a 'shoe' out of 2.5cm masking tape. You cut two pieces about 1.5 times the width of the chicks foot. Place one piece on level surface sticky side upwards and carefully holding the chick (this is a two person job) you need to spread the foot and stick it to the masking tape uncurling the toes and ensuring there is a gap between each. Make sure that the claws are free of the tape. Next, take the second piece of tape and stick it over the top of the foot so it is inline with the first, making sure that you define each toe as you stick the two pieces together. If necessary carefully trim around the shoe with nail scissors. You will need to replace the shoe at least twice a day, but try to maintain this process for at least 5 days.
Scratchy now has a completely flat foot with only one bent toe. I got this advice from an american web site and I believe this works on chicks up to 10 days old. It certainly worked for us!
Best wishes Mambo