Any kind: quick, regular, cooked, uncooked. Just be sure to feed it as a treat, so not more than about a tablespoon per chicken per day. And avoid adding salt and sugar.I’m not sure if I can give my Girls Chicken as a treat. With the Oatmeal though can someone give me what kind of Oatmeal?
I cook regular oats for them with half milk/half water, cinnamon, and a bit of vanilla extract. Other people add mealworms or grubs, sunflower seeds, fruit. . . The options are pretty much anything a chicken can eat that isn't toxic. Let it cool before serving, of course. Their mouths can get burned.