Grill chicken breasts 3 to 4 minutes per side or until firm to the touch. Remove from the grill and keep warm.
Step
In a bowl combine remaining oil, beans, scallions, red peppers, mango and lime juice; season with hot pepper.
Step
Place 2 lettuce leaves on each plate. Divide salad among 4 plates. Top each with a grilled, sliced chicken breast. Serve salad and sliced chicken in lettuce as a carrier.