I have given my chicks fresh bananas & papayas that grow on my farm. I start feeding them the fruit with chick grit sprinkled liberally on it once they are a week old, sometimes just to teach them to eat, since new ones often don't like the starter feed much. I even mix some of the store bought starter with the fruit, watermelon when I have it, but now that they're month old they get fresh grass, kale, avocado, along with their daily meal that starts with banana slices and papaya slices (seeds included).
