Boil the Pasta: Bring a large pot of salted water to a boil and cook the spaghetti until al dente, about 8-10 minutes.
Reserve Pasta Water: Before draining, reserve ¼ cup of the pasta cooking water.
Season the Shrimp: While the pasta is cooking, season the shrimp with salt and pepper.
Sear the Shrimp: Heat 1 tablespoon of olive oil in a skillet over medium-high heat, add shrimp, and cook until pink, about 1-2 minutes per side. Remove and set aside.