Meanwhile, heat coals or gas grill. Place chicken on grill. Cover and grill 4 to 6 inches from medium heat 15 to 20 minutes, turning once, until juice of chicken is clear when center of thickest part is cut (170°F). Cut chicken diagonally into 1/2-inch slices. In large bowl, pour dressing. Add romaine; toss to coat. Sprinkle with croutons, cheese and pepper; toss. Divide salad among bread bowls. Top each with chicken.