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, mince the garlic and finely chop the fresh parsley.
In a large skillet over medium heat, melt the ghee until it begins to shimmer.
Add the minced garlic and red pepper flakes to the skillet, sautéing for about 1 minute until highly aromatic but not browned.
Increase the heat to medium-high and add the shrimp in a single layer, seasoning with sea salt and black pepper.
Cook the shrimp for 2 minutes per side until they turn opaque and pink, then stir in the lemon juice to deglaze the pan.
Drain the linguine, reserving a splash of pasta water, and add the noodles directly to the skillet.
Toss everything together with the fresh parsley and a tablespoon of pasta water if needed to coat the noodles evenly.
Serve immediately while hot and glossy.