Cut chicken into 1/2-inch cubes. Heat oil in large pot over medium heat. Add onion, green pepper and garlic; cook over medium heat for 10 minutes or until onion is tender. Add chicken, cook and stir constantly for 4 minutes or until chicken is lightly browned. Add the remaining ingredients and bring to a boil. Reduce heat, cover and simmer for 40 minutes, stirring occasionally. Add beans. Cook, uncovered for 20 minutes, stirring occasionally. Remove bay leaf before serving.