Step 1: Generously season the shrimp on all sides with salt, pepper, and hot pepper flakes, if using. Toss with the olive oil. If grilling large shrimp, you can arrange them directly on the grill. For smaller shrimp, use a grill grid or grilling basket, or thread them on bamboo or metal skewers. (It’s easier to turn 5 kebabs on the grill than it is 30 small shrimp.)

Step 2: Prepare the Deconstructed Pesto After-Marinade. Place half the olive oil (1/4 cup) in a small saucepan and heat over a medium flame. Add the pine nuts and garlic and fry until golden, 2 minutes. Do not let the garlic chips burn. Pour the mixture into a large heatproof mixing bowl. Stir in the lemon zest and juice. Have the cheese in a small bowl. Right before serving, stack and roll the basil leaves (work in batches), and thinly slice crosswise into 1/4-inch wide ribbons.

Step 3: Set up your grill for direct grilling and heat to high. Brush and oil your grill grate.

Step 4: Arrange the shrimp on the grate and grill until sizzling and browned on the outside and cooked through, about 2 minutes per side.

Step 5: Stir the hot shrimp into the pine nut-garlic-lemon mixture in the large bowl and toss to mix. Add the slivered basil and toss. Stir in the remaining 3 tablespoons olive oil. Transfer the hot shrimp to a platter or plates and sprinkle with the cheese.