Cook the Pasta: Bring a large pot of salted water to a boil. Add the pasta and cook according to package directions until al dente. Reserve about 1 cup of pasta water before draining.
Prep the Shrimp: While the pasta is cooking, pat the shrimp dry with paper towels. Season generously with salt and black pepper.
Sauté the Garlic: Heat the olive oil in a large skillet over medium heat, then I like to add a little butter, too! Add the minced garlic and red pepper flakes. Cook, stirring constantly, until fragrant (about 30 seconds). Be careful not to burn the garlic.
Cook the Shrimp: Add the shrimp to the skillet in a single layer. Cook for 2-3 minutes per side, until pink and opaque (internal temperature of 145°F / 63°C). Remove the shrimp from the skillet and set aside.
Deglaze the Pan: Pour the dry white wine into the skillet. Bring to a simmer and scrape up any browned bits from the bottom of the pan (this is where a lot of the flavor is!). Let the wine reduce slightly, about 2-3 minutes.
Emulsify the Sauce: Reduce the heat to low. Whisk in the lemon juice and lemon zest. Gradually whisk in the cold butter, one cube at a time, until the sauce is smooth and glossy. This process is called emulsifying, and it creates a beautiful, creamy sauce.
Combine and Toss: Add the cooked pasta to the skillet with the sauce. Toss to coat, adding a little bit of the reserved pasta water at a time until the sauce reaches your desired consistency.
Add the Shrimp Back: Gently fold the cooked shrimp back into the pasta.
Garnish and Serve: Stir in the fresh parsley. Serve immediately, garnished with extra parsley and a squeeze of fresh lemon juice so it won't be dry.
Enjoy: Your shrimp scampi pasta is ready to devour!