Start with two cooked chicken breasts. Shred into bite-sized pieces using forks or hands.
In a large pot or Dutch oven, heat 1 tablespoon olive oil over medium heat. Add 1 1/2 teaspoons minced garlic and sauté for about 30 seconds until fragrant but not browned.
Stir in 1 teaspoon chipotle chile powder and 1 teaspoon ground cumin, and toast gently for another 30 seconds.
Pour in 1 cup water, 1/4 teaspoon sea salt, 14 oz can fat-free, low-sodium chicken broth, and 14.5 oz can stewed tomatoes with juices. Stir and bring to a gentle simmer.
Allow soup to cook for about 10 minutes so flavors meld.
Add shredded chicken to the pot, stir well, and simmer for 5 more minutes to heat through.
Preheat oven to 375°F (190°C). Lightly spray cut tortilla strips with cooking spray, spread on a baking sheet, and bake 8-10 minutes until crispy and golden. Alternatively, air fry at 350°F for 5-7 minutes.
Ladle hot soup into bowls, sprinkle with chopped fresh cilantro, serve with lime wedges, and top with crispy tortilla strips just before eating.