Start by ensuring your shrimp are peeled and deveined. If using frozen shrimp, make sure to thaw them completely and pat them dry with paper towels.
In a mixing bowl, combine the shrimp with kosher salt, black pepper, and crushed red pepper. Toss until the shrimp are evenly coated with the seasonings.
Place your skillet over medium-high heat and add the extra virgin olive oil or butter. Allow it to heat up until the oil shimmers or the butter is fully melted.
Carefully add the seasoned shrimp to the hot skillet in a single layer. Cook for about 2-3 minutes on one side until they turn pink and slightly charred.
Using a spatula, flip the shrimp over and cook for an additional 1-2 minutes on the other side until opaque and cooked through.
Once cooked, remove the skillet from heat and drizzle in the lemon juice. Gently toss to combine.
Transfer the shrimp to a serving platter, garnish with chopped fresh parsley, and serve with lemon wedges on the side.