Place chicken in a shallow dish; sprinkle pepper and salt over both sides of chicken, and drizzle with 1 tablespoon oil. Cover and marinate in refrigerator 20 minutes.
Combine the remaining oil, green onions, beans, corn, chiles, and pimento in a medium bowl; stir well.
Place chicken on broiler pan coated with cooking spray, and broil 6 minutes on each side or until done. Cut chicken into thin slices.
Spoon bean mixture onto individual plates, and top with sliced chicken. Garnish with cilantro sprigs, if desired.