Put the flour in a bowl. Crumble yeast into it. Add sugar, salt, oil and 150 ml lukewarm water and knead with the dough hooks of the hand mixer to a smooth dough. Cover and leave to rise in a warm place for about 30 minutes.
Knead again, cut in half and roll out on a floured work surface to two round bottoms (approx. 20 cm Ø). Place on a baking tray lined with baking paper, brush with the tomato pieces and pre-bake in a preheated oven (electric range: 200 °C/ gas: level 3) for approx. 15 minutes.
Drain the pepperoni and spread it on the pizzas with the salami. Season with oregano and sprinkle cheese over it. Bake for another 10 minutes.