Preheat oven to broil / grill settings on high heat. Arrange oven shelf to the middle of your oven.
Combine the oil, garlic and 4 teaspoons of the seasoning together in a small bowl. Brush the bottoms of each mushroom with the garlic oil mixture and place each mushroom, oil side down, on a lightly greased baking sheet / tray.
Fill each mushroom with 2 tablespoons of the pizza sauce per cap, ¼ cup of mozzarella cheese, 6 pepperoni miniatures and tomato slices. Broil / grill until cheese has melted and is golden in colour (about 8 minutes).
To serve, sprinkle with the remaining Italian seasoning (or mixed herbs), and season with salt and pepper to taste.
