Slow Cooker Chicken Fajitas Author: Lisa Ingredients 1 onion 1 1/2 pound boneless/skinless chicken breasts 1/2 cup chicken broth taco seasoning packet (or make your own) 1 tsp. chili powder 1/2 tsp. paprika 1 tsp. salt Instructions Mix all ingredients in your slow cooker. Cook on high for 3-4 hours or low for 5-6 hours.