Set the bread slices on a small baking sheet and brush them all over with the remaining 2 tablespoons of olive oil. Broil the bread slices until golden, about 30 seconds. Flip the toasts, spread them with the anchovy paste and sprinkle them with the Parmesan cheese. Broil the toasts for about 1 minute, until the cheese is melted and lightly browned. Serve the toasts with the tomato salad.