Slice the garlic thinly.
Prepare the peperoncino.
Boil the spaghetti noodles in boiling water.
Add olive oil to the pan and sauté the garlic over low heat.
Add the peperoncino and sauté together.
Add the boiled spaghetti noodles to the pan and mix with a little pasta water.
Season with salt and pepper.
Finish with parsley.