Heat oven to 425°F. Line a baking sheet with foil; coat with cooking spray. Divide pizza crust into 4 equal pieces. Working directly on prepared baking sheet, flatten each piece into a 6-inch circle with a thick edge. Bake 7 minutes.
In small bowl, combine ricotta cheese, oregano, and garlic powder; set aside.
Top each crust with 1/4 cup mozzarella cheese and 1 tablespoon ricotta cheese mixture. Evenly divide broccoli among pizzettes. Drizzle with oil andsprinkle with Parmesan cheese.
Bake pizzettes an additional 8 to 10 minutes, until edges are lightly browned and cheese is bubbly.