Could you share with us the ingredients, and if known, the protein percentage for the natural feed you get locally? Does it have added calcium? It might be okay for the chicks too, if ground finer (smaller) for the chicks.
While arguably feed can help "condition" for laying, really the most important contributing factors to egg laying are photo-period (the amount of daylight or artificial light they get), genetics (which ties into breed), and their own individual programming, as it were.
If you want them for...