HEAT vegetable oil in large saucepan over medium-high heat. Add chicken; cook for 5 to 6 minutes or until chicken is no longer pink. Add onion and garlic; cook, stirring occasionally, for 2 to 3 minutes.
STIR in beans, chiles, broth, jalapeños, cumin and oregano. Bring to a boil. Reduce heat to low; cook, stirring occasionally, for 10 to 15 minutes. Stir in cheese and sour cream. Cook just until cheese is melted.