In a bowl, combine the Brussels sprouts, vegetable oil, chili powder, cumin, garlic powder, oregano, sea salt and cayenne. Mix until the Brussels are evenly coated with the spice mixture.
Lay the Brussels out on a baking sheet and cook for 30-35 minutes or until crispy.
Add a spoonful of cooked Brussels sprouts to a piece of bibbed lettuce and top with your favorite toppings.