Cut the zucchini into 1-inch wide strips. Cut each strip crosswise into 1/2-inch pieces. Cut each cheese stick in half crosswise and then cut out a 1/2-inch square notch. Lay crusts slightly apart on 3 baking sheets, each 12x15 inch. Spread 2 tbsp. of sauce evenly over each crust. Lay the cheese well apart on each crust and fit zucchini onto each. Bake in a 450 degrees oven until cheese just begins to melt, about 8 min.