Chicken Tinga Enchiladas

Name: Chicken Tinga Enchiladas
Prep time: 45 min
Cook time: 20 min
Total time: 1 h 5 min
Cuisine: Latin American, Mexican, American
Ingredients: 7-8 corn tortillas; 1 chicken breast; 1 cup cheese (I used Jack); 1/4 cup finely chopped onion; Pickled Serranos (optional); Queso Fresco (optional); Crema (optional); freshly chopped cilantro (optional); 2 plum tomatoes; 4-5 tomatillos; 1/2 onion; 4 garlic cloves; 3 chipotles in adobo; 1-2 tablespoons adobo sauce (optional); 1 teaspoon Mexican oregano; pinch of cumin (optional); 1/2 teaspoon salt (plus more to taste); freshly cracked black pepper; olive oil; 1/2 cup stock (optional)