Bring a pot of salted water to a boil and cook the whole wheat linguine according to package directions until al dente, then drain and set aside.
While the pasta cooks, use a spiralizer to create zucchini noodles and set them aside on a paper towel to absorb excess moisture.
In a large skillet over medium heat, melt the ghee and olive oil together until shimmering.
Add the minced garlic and red pepper flakes to the skillet, sautéing for about 1 minute until the garlic is fragrant 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 are pink and opaque, then remove the shrimp from the pan and set aside.
Add the zucchini noodles to the same skillet and sauté for 2 minutes until just tender.
Return the cooked linguine and shrimp to the skillet, tossing everything together with the lemon juice and lemon zest.
Remove from heat and garnish with freshly chopped parsley before serving warm.