In small bowl, toss chicken and taco seasoning mix until coated. Spray 3-quart saucepan with cooking spray; heat over medium-high heat. Add chicken; cook 2 minutes, stirring occasionally, until lightly browned. Add broth, scraping pan to loosen brown particles.
In small bowl, slightly mash beans, leaving some whole. Add beans and salsa to chicken mixture; stir well. Heat to boiling; reduce heat. Simmer uncovered 10 minutes or until slightly thickened. Garnish individual servings with sour cream, cilantro and pepper.