Sausage and Red Bell Pepper Breakfast Pizza

Name: Sausage and Red Bell Pepper Breakfast Pizza
Ingredients: 3 tablespoons extra-virgin olive oil , plus extra for drizzling; 6 ounces bulk breakfast sausage; 1 red bell pepper , stemmed, seeded, and chopped; 1 onion , chopped; Salt and pepper; 8 ounces extra-sharp cheddar cheese , shredded (2 cups); 1 ounce Parmesan cheese , grated (1/2 cup); 4 ounces (1/2 cup) small-curd cottage cheese; 1/4 teaspoon dried oregano; Pinch cayenne pepper; 1 pound store-bought pizza dough , room temperature; 6 large eggs; 2 scallions , sliced thin; 2 tablespoons minced fresh chives