In a large pot of salted boiling water, cook the linguine or spaghetti according to package instructions until al dente. Reserve 1/2 cup of pasta water, then drain and set aside.
In a large skillet, melt the butter over medium heat. Add the minced garlic and red pepper flakes, sautéing for about 30 seconds until fragrant.
Increase the heat to medium-high and add the shrimp to the skillet. Season with salt and pepper, then cook for 2-3 minutes on each side until the shrimp are pink and opaque.
Pour in the chicken or vegetable broth, lemon zest, and lemon juice. Let the mixture simmer for 2-3 minutes, allowing the flavors to meld. If the sauce is too thick, you can add a bit of the reserved pasta water to reach your desired consistency.
Add the cooked pasta directly into the skillet with the shrimp, tossing everything together until the pasta is well coated with the garlic butter sauce. Stir in the chopped parsley.
Plate the scampi and garnish with additional parsley and lemon wedges. Enjoy your delicious garlic butter shrimp scampi!
Notes
Adjust red pepper flakes to taste for desired spiciness.