Dissolve the yeast in 200 ml of lukewarm water in a bowl. Mix with salt and 2 tablespoons of olive oil, first stir in the flour in portions, then knead in until a smooth dough ball is formed. Cover the yeast dough and let it rise in a warm place for about 20 minutes. In the meantime, peel the pineapple, cut out the stalk and cut the pineapple into thin rings. Mix the tomato pieces with crème fraîche. Season with salt and pepper. Halve the dough.
Roll out dough halves one after the other on a floured work surface (30 cm Ø). Cover 2 baking trays with baking paper. Place the dough on top and spread with the tomato-crème fraîche mixture. Spread pineapple rings on top. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 25 minutes. In the meantime, grate the Gouda roughly. About 10 minutes before the end of the baking time, cover the pizzas with slices of ham and sprinkle with Gouda rasp.