In a small bowl mix together chicken spice rub. Preheat oven to 450 degrees.
Place chicken pieces in a separate bowl and coat with chicken spice rub.
In large cast iron skillet put a drizzle of vegetable oil over medium to high heat. Add chicken pieces to brown, then remove chicken. Add peppers and onions and let them sweat. Return chicken to pan with peppers and onions. Add chicken broth and allow to thicken.
While chicken is cooking, brush tortillas with vegetable oil.
Cook/brown tortillas. You want them to be brown and crispy. You may need to flip them to brown on both sides.
Spoon chicken mixture onto crispy tortillas. Add your favorite toppings.