Remove the shells and veins from the shrimp, then rinse them thoroughly.
Slice the garlic thinly.
Boil the spaghetti noodles in salted water, then drain.
Add olive oil to a pan and sauté the garlic over low heat until fragrant.
Add the shrimp and stir-fry.
Add the cooked pasta and a little pasta water to the pan and toss together.
Season with salt, black pepper, and peperoncino.
Finish by sprinkling parsley on top.