Preheat the oven to 400°. Season the chicken rolls with salt and pepper and dust with flour. Heat the olive oil in the skillet. Add the chicken rolls, seam side down, and cook over moderately high heat, turning, until browned all over, about 8 minutes. Transfer the skillet to the oven and roast the chicken rolls for about 15 minutes, or until the cheese is melted and the juices run clear when the meat is pierced with a knife. Place the chicken on a plate, discard the toothpicks and cover loosely to keep warm.