In a large bowl, combine 2 tablespoons of smoked paprika, 1 tablespoon of chili powder, 1 tablespoon of Italian seasoning, 1 teaspoon of garlic powder, 1 teaspoon of red pepper flakes, and 1 teaspoon of salt. Whisk these spices together until evenly mixed. Next, add the raw shrimp (1.5 lb, deveined and peeled) to the bowl along with 1 tablespoon of olive oil. Toss the shrimp until they are well-coated with the seasoning mixture.

Preheat a 12-inch cast-iron skillet over medium heat for about 3-4 minutes. Once heated, increase the temperature to medium-high and add the remaining tablespoon of olive oil, swirling it to cover the pan’s surface.

Add the seasoned shrimp to the hot skillet in a single layer, cooking for approximately 2 minutes on one side. Flip each shrimp and cook for another 1-2 minutes until they turn pink and opaque.

Remove the shrimp from the heat once cooked through. Transfer to a serving platter and garnish with fresh lemon slices and chopped basil or parsley. Serve immediately.