Bring a large pot of salted water to a boil and cook the linguine according to package directions until al dente.
While the pasta cooks, peel and devein the shrimp, then pat them dry with a paper towel and season with sea salt and black pepper.
Mince the garlic cloves finely and chop the fresh parsley.
Heat a large skillet over medium heat and add the ghee.
Once the ghee is melted, add the minced garlic and red pepper flakes, sautéing for about 1 minute until fragrant but not browned.
Add the shrimp to the skillet in a single layer and cook for 2 minutes per side, or until they turn pink and opaque.
Reserve 2 tablespoons of the pasta cooking water, then drain the linguine.
Add the cooked linguine, reserved pasta water, and lemon juice to the skillet with the shrimp.
Toss everything together over low heat for 1 minute to allow the sauce to coat the noodles.
Remove from heat, garnish with fresh parsley, and serve immediately.