Preheat a large non-stick skillet or grill pan over medium heat. Spray heavily with cooking spray.
Pound chicken breasts to an even thickness or cut in half lengthwise to form thinner cutlets. They'll cook more evenly this way.
Combine salt, ground cumin, chili, garlic and onion powder together in a small bowl. Season both sides of all chicken breasts generously with spice mixture.
When skillet is nice and hot, add 3 chicken breasts and cook for 5 to 6 minutes on each side, or until chicken is completely cooked in the center. ( You don't want to overcrowd the pan, so cook chicken in 2 batches)
Once chicken is cooked, transfer to a large cutting board and cut into bite-size strips.
Meanwhile, heat the corn tortillas in the microwave for 10 to 20 seconds to warm up or you can warm them up on a skillet.
To assemble tacos, add some chicken down the center of one corn tortilla. Add a couple Tablespoons each of chopped cilantro, raw onion and purple cabbage. Sprinkle the top with a little Cotija cheese and Creamy Tomatillo dressing.
Repeat with all chicken, tortillas and toppings. Serve immediately and enjoy!
Notes
*This recipe easily doubles and triples, as needed. *You can bake the seasoned chicken in a 375 F° oven for 35 to 40 minutes or until thoroughly cooked.