Worry no more, my friends. Just set your oven to the warm setting, and place a baking sheet with cooling rack on it inside the oven. When you place the breaded chicken on the cooling rack, it leaves room for the warm air to circulate underneath, keeping your breading crisp and your chicken warm.
And if your breaded chicken is being baked in the first place, rather than fried, you can bake it on the cooling rack to begin with. That way the whole thing will get crispy and delicious. Easy peasy.