Sit quietly in the run. Hold raisins or some really tasty treat in your hands. Hold pieces up like you're really checking those raisins out. Ignore your chicks as they watch. If anyone comes close to see what you have, just slowly lay a few on your lap where they can see. Don't try to pet them or anything, just draw them to you. Within a few days they will be running to you, and several will hop up on your lap to grab treats...go from there.