In a large pot, heat the olive oil over medium heat. Add the onion, garlic, and jalapeno and cook until softened, about 5 minutes.
Add the cumin, chili powder, diced tomatoes, chicken broth, shredded chicken, corn, and black beans. Season with salt and pepper to taste.
Bring the soup to a boil, then reduce heat and simmer for 20 minutes.
While the soup is simmering, preheat the oven to 375°F (190°C). Spread the tortilla strips on a baking sheet and bake for 10 minutes or until crispy.
To serve, ladle the soup into bowls and top with tortilla strips, shredded cheese, chopped cilantro, diced avocado, and a squeeze of lime juice.