Heat oven to 425F. Heat a large nonstick skillet over medium-high heat until hot; coat with cooking spray. Add vegetables and garlic; stir-fry 2 to 5 minutes or until vegetables are crisp-tender. Season to taste with salt and pepper, if desired. Combine pizza sauce, olive relish and sun-dried tomato bits. Spread over pizza crust; top with cooked and cheese. Bake pizza directly on oven rack 10 to 15 minutes, or until crust is golden brown and cheese is melted. Cut pizza into 8 wedges.