Heat oven to 425°F. Spray 15x10x1-inch pan with cooking spray.
In small bowl, mix dressing, salt, garlic-pepper blend and basil. Place fish and vegetables in pan. Drizzle with dressing mixture, turning fish and vegetables to coat.
Bake uncovered 30 to 35 minutes, turning vegetables once or twice, until fish flakes easily with fork and vegetables are tender.