Preheat oven to 400°. Spray rimmed baking pan with cooking spray. Place branzino on baking pan; stuff each cavity with 1 oregano sprig, and half the garlic and lemon slices. Sprinkle shallot and tomatoes around branzino; drizzle with oil, sprinkle with remaining 3 oregano sprigs and salt and pepper to taste. Roast 20 minutes.
Preheat broiler to high; sprinkle tomatoes and shallots with cheese. Broil 2 minutes or until cheese is lightly browned.
Serving Size 1
Servings 0
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.