Prep the zucchini noodles: Spiralize the zucchini and lay the noodles on a clean kitchen towel.
Sprinkle lightly with salt and let them sit for 10 minutes to draw out moisture. Pat dry to reduce excess water later.
Season the shrimp: Pat the shrimp dry. Season with a pinch of salt, black pepper, and a small pinch of red pepper flakes.
Heat the pan: Set a large skillet over medium-high heat.
Add 1 tablespoon olive oil and 1 tablespoon butter. When hot and foamy, add the shrimp in a single layer.
Sear the shrimp: Cook 1–2 minutes per side, just until pink and opaque. Transfer to a plate.
Do not overcook; they’ll finish in the sauce.
Build the scampi sauce: Lower heat to medium. Add the remaining 1 tablespoon olive oil and 2 tablespoons butter. Stir in the garlic and cook 30–45 seconds until fragrant, not browned.
Add red pepper flakes and lemon zest.
Deglaze: Pour in the white wine (or broth). Scrape up any browned bits. Simmer 2–3 minutes until slightly reduced and glossy.
Add lemon: Stir in 2 tablespoons lemon juice.
Taste and adjust with more lemon if you want extra brightness.
Toss in the shrimp: Return the shrimp and any juices to the pan. Cook 30–60 seconds to warm through.
Fold in zucchini noodles: Add the zoodles and toss gently with tongs for 1–2 minutes, just until slightly tender but still crisp. Avoid overcooking or they’ll turn watery.
Finish and serve: Turn off the heat.
Stir in parsley. Taste and adjust salt, pepper, and lemon. Serve immediately with an optional sprinkle of Parmesan.