Combine The First 8 Ingredients In A Mixing Bowl. Add Tortellini, Chicken And Parmigiano Reggiano And Toss To Combine. Season With Salt And Pepper To Taste. Divide Salad Greens Among Four Plates. Spoon 1 Cup Of The Chicken Mixture Over The Greens. Drizzle With Desired Amount Of Balsamic Vinegar Reduction.