2. Step
Meanwhile, heat oil in a large skillet over medium heat. Add zucchini, garlic, salt and pepper; cook, stirring, until any liquid is absorbed and the zucchini is very soft. Add the cooked pasta to the skillet and toss with tongs until well combined. Add a little of the reserved pasta water if the mixture seems very dry. Sprinkle with Parmesan and lemon juice; toss again to coat.