Method:
Preheat oven to 425°F. Heat 1 tablespoon of the oil in a large skillet over medium high heat. Add tempeh strips and cook, turning occasionally, until golden brown. Transfer to a cutting board and cut into 1-inch pieces.
Heat remaining 1 tablespoon oil in the same skillet over medium high heat. Add mushrooms, peppers and garlic, and cook, stirring occasionally, until tender, about 5 minutes. Remove from heat.
Arrange pizza crusts on large baking sheets. Spoon pasta sauce over crusts and spread out evenly. Top each crust with equal amounts of mushroom mixture, tempeh, feta, mozzarella, olives, chives and oregano. Bake until crusts are crisp and cheese is melted and golden brown, 15 to 20 minutes.