1Heat gas or charcoal grill. In medium bowl mix all dressing ingredients with whisk; set aside.
2Sprinkle chicken with salt and pepper. Place chicken on grill over medium-high heat. Cover grill; cook 8 to 10 minutes, turning once, until juice of chicken is clear when center of thickest part is cut (165°F). Let stand 5 minutes; cut chicken diagonally into 1/2-inch slices.
3Divide salad greens between 2 plates. Arrange chicken slices over greens. Drizzle 2 tablespoons dressing over each salad. Serve immediately. Remaining dressing can be saved for another use.