Use Zucchini Spiralizer to achieve the spaghetti form. It may look like a lot once it has all gone though the machine, but keep in mind the zucchini does shrink down once cooked
Use a medium heated frying pan and add the olive oil, garlic, zucchini noodles and salt & pepper. Sauté and cover pan until noodles have softened, but not so much they have turned into mush. About 7-10 minutes