Start by cutting the tops of the tomatoes, chop and set aside. With a spoon, scoop the flesh of the tomato making sure that you do not break it. Place the tomatoes to the side until ready to use.
Drain the tuna and prepare all the ingredients. In a bowl add the chopped tomato tops and mix all the ingredients.
Gently, fill each tomato with the mixed filling. Drizzle with some olive oil and chopped fresh herbs. Serve immediately, or store in the fridge until ready to eat.