Not really a recipe.
If you can get fresh oregano, this is a dream. If not, basil or a very fresh parsley will do. Simply slice your tomatoes and lay them on a platter, drizzle some olive oil on them, grind a lot of black pepper and sea salt over them, scatter some chopped oregano leaves (or your herb of choice). If you like you can mix the olive oil with some red wine vinegar.
Fry some capers in a little olive oil until crispy and scatter on top.