1. Brush 1 tablespoon dressing on both sides of chicken; season with salt and freshly ground black pepper, both to taste. Coat nonstick grill pan with cooking spray; heat over medium-high heat. Add chicken; cook 4–5 minutes per side.
2. Toss lettuce with remaining dressing; arrange on 4 plates. Slice chicken; arrange on salads. Top with cheese; serve with 2 breadsticks.