You can train chicks. They're naturally curious, so getting them to peck at something is very easy. (They have shorter attention spans, though.) Best thing to do is build a good relationship. Hold them for a bit to get used to handling. (I'm sure you're already doing this.) After some snuggles, say their name + give treat. That way when you call an individual hen, shey'll come. (Specific Name = treat!)
You can also train them to go into their cage / coop in the same way. Say "go coop" & start throwing mealworms down inside the coop. All chickens learn to follow the treats & that's an easy way to coop them up when needed during the day. Even if you never plan to officially train them, being able to easily get chickens back inside the coop is a good idea. When I go outside & have kitchen scraps, I call, "Ch-ch-chickens" and they all come running straight to me. Some may also follow me around without food, but when I make that call, ALL come running at their top chicken speed. So much fun to watch.