HEAT oven to 425°F. Cut loaf of bread into 1/2-inch thick slices. Brush 8 bread slices on both sides with olive oil, reserving remaining bread for another use. Place on baking sheet. Bake 5 minutes. Turn slices upside down.
COMBINE oregano, red pepper flakes and mozzarella cheese. Reserve 1/2 cup of cheese mixture. Divide remaining seasoned cheese evenly on top of toasted bread slices. Sprinkle each with tomatoes, olives and feta. Top with remaining seasoned cheese.
RETURN to oven. Bake 12 to 15 minutes or until cheese melts and bottoms are crisp.
Serving Size (1/8), Calories 370 (Calories from Fat 180), Total Fat 19g (Saturated Fat 5g, Trans Fat 0g), Cholesterol 35mg, Sodium 850mg, Total Carbohydrate 31g (Dietary Fiber 2g, Sugars 2g), Protein 16g; Percent Daily Value*: Vitamin A 6%, Vitamin C 4%, Calcium 25%, Iron 10%.
*Percent Daily Values are based on a 2,000 calorie diet.