Toast the tortilla strips: Preheat oven to 375°F (190°C).
Toss tortilla strips with a light drizzle of oil and a pinch of salt. Spread on a sheet pan and bake 8–12 minutes, tossing once, until crisp and lightly golden. Set aside.
Sauté aromatics: Heat oil in a large pot over medium.
Add onion and a pinch of salt. Cook 4–5 minutes until softened. Stir in garlic and jalapeño, cooking 30–60 seconds until fragrant.
Build the base: Add tomato paste, cumin, chili powder, smoked paprika, and oregano.
Stir 1–2 minutes to toast the spices and darken the paste slightly.
Simmer the soup: Pour in broth and the can of fire-roasted tomatoes with juices. Bring to a boil, then reduce to a lively simmer for 10 minutes.
Add protein and corn: Stir in shredded chicken (or beans), and corn. Simmer another 8–10 minutes to warm through and meld flavors.
If using quinoa, add now and simmer 10–12 more minutes, adding a splash of broth if needed.
Finish and season: Stir in lime juice. Taste and season with salt and pepper. For extra body and protein, whisk in collagen until dissolved.
Serve: Ladle into bowls.
Top with crunchy tortilla strips and your favorite garnishes like avocado, cilantro, and a dollop of Greek yogurt. Add a squeeze of lime for brightness.