Bring a pot of salted water to a boil and cook the whole wheat pasta according to package directions until al dente, then drain and set aside.
Pat the shrimp and sea scallops thoroughly dry with paper towels to ensure a golden sear.
Season the seafood evenly with the sea salt and black pepper.
Heat the extra virgin olive oil and ghee in a large skillet over medium-high heat until the ghee is melted and shimmering.
Add the scallops to the skillet and sear for 2 minutes per side until a golden crust forms, then remove and set aside on a plate.
Add the shrimp to the same skillet and cook for 1-2 minutes per side until pink and opaque, then remove and set aside with the scallops.
Reduce heat to medium and add the minced garlic and red pepper flakes to the pan, sautéing for 30 seconds until fragrant.
Stir in the baby spinach until just wilted, then return the shrimp and scallops to the pan.
Add the cooked pasta, fresh lemon juice, and chopped parsley, tossing everything together until the pasta is coated in the silky garlic butter sauce.