Healthy and Tender Ninja Foodi Chicken Breasts - How to make Juicy, Healthy and Tender Chicken Breasts in the Ninja Foodi. This is a quick and easy recipe for JUICY Chicken Breasts. In this post I cover both the Air Fryer and Grill method. How long to cook Chicken Breast in Ninja Foodi. How to cook frozen chicken breasts in Ninja Grill. How to store leftover chicken breasts and how to reheat.