Preheat oven to 350°; spray rimmed baking pan with cooking spray. In large saucepot, heat oil over medium-high heat. Add chiles, onion and bell pepper; cook 7 minutes or until vegetables are tender-crisp, stirring occasionally. Reduce heat to medium. Stir in beans, chicken, lime juice and cumin; cook 8 minutes or until heated through, stirring occasionally. Remove saucepot from heat; fold in cheese and cilantro. Makes about 8 cups.
Spoon about 1 cup chicken mixture down center of each tortilla; fold sides over filling. Place burritos, seam side down, in prepared pan; bake 15 minutes or until tops of burritos are lightly browned. Serve burritos topped with salsa garnished with cilantro sprigs, if desired.