Arrange the tomato slices on two serving plates, lightly seasoning the layers with salt and pepper. Crumble the tofu into a mixing bowl, then add the peppers, chives, parsley, pine nuts and sultanas and mix together.
Whisk together the olive oil, lemon juice and sugar in a small jug or bowl. Season lightly with salt and pepper and mix into the salad.
Spoon the salad over the sliced tomatoes.