Pictures and videos can help to see what you are seeing. Vitamins with trace minerals may help if he has a deficiency. How old is he? Were his toes curled under or just crooked to the side? Is he eating and drinking enough? Was he vaccinated for Mareks disease?
He's eating and drinking plenty, he's about 4 weeks old and is eating chick starter crumb, his 3 other siblings are doing fine, he hatched 2 days after the others and is smaller, I have been feeding him seperately as the others push him out of the way. Will try to get some photos or a video soon.
He might be a little weaker or meeker. What you are doing is probably the best for him. Mareks can present symptoms at this age, but usually is later. Vitamins, probiotics, and some egg may help him catch up.