I mix organic chick starter in with other grains and seeds as my feed. I only put out enough for two days generally and they eat the other things on the second day that they rejected the first day.
Get yourself a deep dish oil pan or black fortex rubber pan to go under your feeder- set your feeder right inside it and the billing out is saved to be poured back into the feeder every day. They eat everything this way.
I have found that they need more grains sometimes and more chick starter sometimes. If I notice they are craving something I increase it in the feed. Works well for my chickens.
I feed rolled oats, rolled barley, split peas (Austrian peas right now but won't buy these again), black oil sun seeds, millet, wheat, and organic cracked corn. One third is organic chick starter. Oyster shell and grit. Kitchen scraps. Also grass every day.
Keep your scratch limited (10% of feed is what I have read) if you are starting with a base of layer feed, since layer feed is usually 16% protein and chick starter is 20%. I feed unmedicated starter as it is high in protein...when I cut it with grains it doesn't lower the protein so much. Make sure you give oyster shell if using flock raiser (20% protein) or starter.