For the Vinaigrette: In a small bowl, whisk together the lemon juice, olive oil, salt, and pepper until combined.
For the Salad: Place the garbanzo beans, zucchini, corn, red onion, and lettuce in a large salad bowl. Pour the vinaigrette over the salad and toss well. Garnish with the crumbled Parmesan cheese and serve.
Recipe courtesy of Giada De Laurentiis, 2008