The only extra thing in layer feed in extra calcium, you can feed grower and get oyster shell to throw out for your layers. They'll pick out what they need. Layer feed has ho hum nutrition.
Feed only the chick feed if you intend to keep males, layer feed isn't good for males and nonlaying birds, nut that's not your problem.
Give him one 400i.u vitamin E capsule and about a third of a B complex tablet every day for a few weeks, any brand from the grocery store.