Slice zucchini into 1/4 inch slices (or you can do wedges). In a Ziploc style bag, place zucchini and Italian dressing. Toss to coat.
Place on a hot grill and grill about 4 to 5 minutes or until nice grill marks appear and the zucchini is slightly limp. (You can also cook these in the oven at about 400° for about 10 minutes.) Don't overcook them!