Heat the olive oil in a large pot over medium heat. Add the onion and cook for 3–4 minutes, until it starts to soften.
Stir in the garlic and jalapeño. Sauté for about 1 minute until fragrant.
Add the cumin, chili powder, and paprika. Give it a quick stir to bloom the spices.
Pour in the chicken broth and bring to a gentle simmer.
Add the shredded chicken, tomatoes, black beans, and corn. Simmer for 8–10 minutes to combine flavors.
Season with salt and pepper to taste. If you like it spicier, add a pinch more jalapeño.
Just before serving, stir in half of the cilantro.
Ladle into bowls and top with tortilla strips. Add a dollop of Greek yogurt if you’re using it, a squeeze of lime, and a sprinkle of the remaining cilantro.