Preheat oven to 425°.
Combine the first 3 ingredients in a medium bowl. Spread cheese mixture over pizza crust, leaving a 1/2-inch border around the edge. Sprinkle with basil and next 6 ingredients (basil through garlic powder). Arrange plum tomato slices in a single layer on top. Place pizza on baking sheet. Bake at 425° for 10 minutes. Remove pizza to cutting board; cut into 6 slices.