1. Preheat oven to 180ºC In a small bowl, whisk together the oil, chili powder, oregano & cumin to blend well.
2. Pulverize the tortilla chips in a food processor. Pour into a shallow bowl.
3. Dip the chicken pieces in the seasoned oil; then dredge in the ground chips until coated. Set on a foil-lined baking sheet & bake for 45 minutes until browned & crisp outside & tender inside. Serve hot.