Toss the greens with the vinaigrette. Taste and adjust seasoning. Using a vegetable peeler, shave as much Parmesan as you like into the salad. Toss again gently. Shave a little more Parmesan on top.
05Note: At Delfina, the pancetta is grilled, but home cooks may prefer to render it in a skillet. If pancetta isn't available, you can use bacon instead.