Cook pasta according to package directions. Drain and set aside, reserving 1/2 cup of pasta water.
While pasta is cooking, heat olive oil and 2 tbsp butter in a large skillet over medium heat.
Add garlic and red pepper flakes (if using), sauté for 30 seconds until fragrant.
Add shrimp in a single layer. Season with salt and pepper. Cook 2–3 minutes per side until pink and opaque. Remove shrimp and set aside.
In the same skillet, add lemon juice, lemon zest, chicken broth, and remaining 1 tbsp butter. Simmer for 2 minutes.
Return shrimp to the skillet, then add cooked pasta and toss to coat. Add reserved pasta water a little at a time if needed to loosen the sauce.
Sprinkle with parsley and Parmesan if desired. Serve immediately with lemon wedges on the side.
Prep Time: 10 minutes | Cooking Time: 15 minutes | Total Time: 25 minutes
Kcal: Approx. 460 per serving | Servings: 4