3 tablespoons extra-virgin olive oil, plus extra for drizzling
8 ounces mozzarella 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
Salt and pepper
Pinch cayenne pepper
1 pound store-bought pizza dough, room temperature
6 large eggs
3 tablespoons capers, rinsed
1/4 cup sliced red onion
3 ounces sliced smoked salmon, cut into thin strips
1/4 cup sour cream
2 tablespoons minced fresh chives