Slice zucchini lengthwise into 1/8 inch slices after trimming off ends. Toss with ground black pepper and garlic powder. Microwave on high 2-3 minutes or steam 3-4 minutes or until flexible enough for rolling. Uncover, drain, and toss zucchini with 2 t. lemon juice and 1 T. olive oil. Roll zucchini slices with thin slices of proscuitto cheese, rolling to enclose the cheese. (Actually any white mild cheese works well too.) Place these on end in a deep serving dish containing about 1/2 inch of your favorite chunky tomato sauce. (With onions is nice.) This can be served unheated or heated slightly. Garnish with fresh basil. Can be made with yellow summer squash also.