Preheat oven to 200°C. Lay bread halves onto a baking tray. Halve tomatoes crossways and scoop out seeds with a teaspoon. Dice and transfer to a bowl. Season with salt and pepper. Add basil and toss to combine. Spread over bread.
Top bread with salami, capsicum and olives. Sprinkle cheese over and bake for 10 minutes until cheese has melted. Top with rocket and serve.