Gather all your ingredients to ensure a smooth cooking process.
Heat the olive oil in a large pot over medium heat. Add the chopped onion and sauté for about 5 minutes until soft and translucent. Stir in the minced garlic and chopped bell pepper, cooking for another 2-3 minutes.
Add the ground cumin, chili powder, and smoked paprika. Stir and cook for about 1 minute. Pour in the diced tomatoes and chicken broth, bringing the mixture to a gentle simmer.
Incorporate the shredded chicken, black beans, and corn. Season with salt and pepper to taste. Allow the soup to simmer for 15-20 minutes.
Stir in the chopped cilantro and lime juice just before serving. Garnish with tortilla strips, avocado slices, and shredded cheese if desired.