Chicken Tacos

Name: Chicken Tacos
Cook time: 30 min
Total time: 30 min
Cuisine: American, Mexican, Latin American
Ingredients: ¼ cup olive oil; 2 medium yellow onions, finely chopped; 2 bell peppers (any color), finely chopped; 4 cloves garlic, finely chopped; 2 pounds ground chicken (not extra-lean all breast meat); 1 tablespoon paprika; 2 teaspoons ancho chili powder; 1½ teaspoons ground cumin; ½ teaspoon dried oregano; ⅛ teaspoon cayenne pepper (optional); 1¾ teaspoons salt; 1 (8 oz) can tomato sauce (1 cup); ½ cup chopped fresh cilantro (see note); 12 hard taco shells; 2 cups shredded lettuce or red cabbage, optional for topping; 2 cups shredded Mexican cheese blend, optional for topping