Chicken Enchiladas

Name: Chicken Enchiladas
Ingredients: 3 tablespoons vegetable oil; 1 1/2 pounds skinless boneless chicken breast; Salt and pepper; 2 teaspoons cumin powder; 2 teaspoons garlic powder; 1 teaspoon Mexican Spice Blend; 1 red onion, chopped; 2 cloves garlic, minced; 1 cup frozen corn, thawed; 5 canned whole green chiles, seeded and coarsely chopped; 4 canned chipotle chiles, seeded and minced; 1 (28-ounce) can stewed tomatoes; 1/2 teaspoon all-purpose flour; 16 corn tortillas; 1 1/2 cups enchilada sauce, canned; 1 cup shredded Cheddar and Jack cheeses; Garnish: chopped cilantro leaves, chopped scallions, sour cream, chopped tomatoes