Preheat grill to medium-high heat. Meanwhile, crumble ground meat into Multipurpose Steamer. Microwave; covered, 2 min. Remove from microwave. Use Ground Meat Separator to break up large chunks; discard any liquid in steamer. Season with 2 tbsp topper blend.
Slice zucchini into 1⁄2” rounds. Toss with 2 tsp oil and 1 tsp topper blend. Thinly slice tomato into large rounds.
Place zucchini slices on grill. Barbecue, with lid closed 2 min per side or until lightly charred. Remove from grill.
Lightly oil both sides of the pizza shell with remaining 1 tsp oil. Grill until lightly charred, about 1 min per side.
Top pizza with cheese, tomato, zucchini, and cooked turkey. Place pizza back on the grill, close lid and cook 3–5min, or until cheese is melted.
Shake on remaining blend. Drizzle with balsamic reduction before serving, if desired.