Rinse and dry squid, chop a tiny bit if needed. Peel the garlic cloves. Cut the chili pepper into rings.
Heat half of the oil in a frying pan, sauté the garlic and chili peppers in it, remove from the frying pan. Fry the squid in the remaining oil for about five minutes, add the cleaned and washed sugar snap peas, fry briefly. Season with salt and pepper and cook for about ten minutes with the lid closed.
Cook the spaghetti in salted water until al dente, drain and drain well. Place in warmed plates, top with squid and snow peas and sprinkle with roasted garlic slices and chili pieces.