In shallow dish, stir flour, salt and pepper. Coat fish pieces in flour mixture (reserve remaining flour mixture). In 12-inch nonstick skillet, heat oil over medium-high heat. Place coated fish in oil. Cook 8 to 10 minutes, turning halfway through cooking, until fish flakes easily with fork; remove from heat. Lift fish from skillet to serving platter with slotted spatula (do not discard drippings); keep warm.