Healthy Slow Cooker Chicken Fajitas, My new go to recipe for fajitas! Slow Cooker Chicken Fajitas - A quick, no-fuss way to make this healthy Mexican food favorite. These are easiest chicken fajitas you will ever make and they taste AMAZING! Great Chicken Fajita taste → onions, red, yellow and green peppers, perfectly seasoned chicken breast –→ made in one pan with no precooking. Simple yummy crock pot recipe!