Heat olive oil in a large Dutch oven over medium heat. Add onion and bell pepper. Cook 5–7 minutes until softened.
Stir in garlic and jalapeño. Cook 30 seconds.
Add chili powder, cumin, smoked paprika, oregano, salt, and pepper. Cook 30 seconds to bloom spices. Stir in tomato paste and cook 1 minute until slightly darkened.
Add diced tomatoes, green chiles, and chicken broth. Bring to a simmer and cook 15 minutes to develop flavor.
Stir in shredded chicken, corn, and black beans. Simmer 8–10 minutes.
Remove from heat and stir in lime juice. Adjust seasoning as needed.
Serve hot with tortilla strips, avocado, cilantro, cheese, and sour cream.