In a small bowl, combine the lemon zest and juice. Gradually whisk in the olive oil. Season with salt and pepper. Set aside.
Shrimp - Grill or saute
In a bowl, toss the shrimp with 2 Tbs. of the lemon vinaigrette, the 1/4 tsp. salt and the 1/2 tsp. pepper.
GRILL: Lightly oil the grill screen. Arrange the shrimp on the grill screen and cover. Grill, turning once, until the shrimp are firm and opaque, about 5 minutes total. Transfer the shrimp to a bowl, add the pesto and 1 Tbs. of the lemon vinaigrette, and stir to coat the shrimp.
OR SAUTE: Lightly oil saute pan and heat over medium heat. Add shrimp and pesto and cook until shrimp are firm and opaque, turning after about 3 minutes.
Salad
In a large bowl, combine the salad greens, tomatoes, corn and black beans. Drizzle with the remaining lemon vinaigrette and toss. Divide the salad among 4 plates, top with the shrimp and serve immediately.
Notes
This recipe is so versatile: you can add cucumber, carrot, celery or omit some ingredients like corn or black beans. It's simply a nice refreshing salad with shrimp on top.If time is tight and you have a vinaigrette dressing on hand, you can use that instead of making the lemon vinaigrette.