How to Make It
To prepare spice blend, combine first 6 ingredients in a small bowl.
To prepare soup, heat 2 teaspoons oil in a large nonstick saucepan over medium-high heat. Add chicken; sprinkle 1 1/2 tablespoons spice blend over chicken. Sauté 8 minutes or until done; cool. Chop chicken; set aside.
Heat remaining 1 teaspoon oil in pan over medium-high heat; add onion, bell peppers, garlic, and 1/2 teaspoon salt. Sprinkle vegetable mixture with remaining spice blend; sauté 8 minutes or until vegetables are tender. Stir in chicken, corn, broth, and tomatoes; bring to a boil. Reduce heat; simmer 15 minutes. Add lime juice.
To prepare relish, combine chopped cilantro and next 4 ingredients (through avocado).
Ladle 1 1/4 cups soup into bowls; top with 1/4 cup relish. Garnish with cilantro sprigs, if desired.