Chicken Tortilla Soup

Name: Chicken Tortilla Soup
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: American, Mexican
Ingredients: 1 tablespoon olive oil; 1 yellow onion (chopped); 3 cloves garlic (minced); 1 jalapeño (seeded and diced); 3 cups chicken broth; 14.5 ounces crushed tomatoes; 15 ounces canned black beans (1 can, drained and rinsed); 10 ounces canned diced tomatoes with chilies (with juices, such as Rotel, 1 can); 2 boneless skinless chicken breasts (about 6 ounces each); 1 cup corn kernels (drained if canned); ¼ cup chopped fresh cilantro; 1 teaspoon chili powder; 1 teaspoon cumin; 1 lime (juiced); 1 avocado (sliced, for garnish); 6 small corn tortillas (cut into ¼-inch strips); ¼ cup vegetable oil; salt