Spicy Chicken and Black Bean Soup

Name: Spicy Chicken and Black Bean Soup
Ingredients: 2 tablespoons salted butter; 2 tablespoons olive oil; 1 large onion, diced; 2 tablespoons chili powder; 1 tablespoon ancho chile powder; 4 cloves garlic, minced; 2 red bell peppers, diced; 2 poblano peppers, diced; 1 serrano pepper, sliced; Pinch freshly ground black pepper, plus more as needed; Pinch kosher salt, plus more as needed; One 14-ounce can black beans, rinsed and drained; One 14-ounce can sweet corn, drained; One 10-ounce can diced tomatoes and green chiles; One 4-ounce can green chiles; 1 tablespoon adobo sauce from a can of chopped chipotles; 6 cups chicken broth; 2 cups shredded rotisserie chicken; 2 limes, 1 juiced, 1 cut into wedges; 1 cup sour cream; 1 cup crumbled Cotija; 1/4 cup chopped fresh cilantro