Crumble the yeast and dissolve in 1/4 l lukewarm water. Mix 400 g flour, 1 pinch of sugar and 1/2 tsp salt. Add yeast and oil and knead to a smooth dough. Cover and leave to rise in a warm place for about 45 minutes
Season tomatoes with thyme, salt and pepper. Drain the corn. Clean, wash and chop the peppers. Peel onion, cut into rings. Crumble feta cheese
Knead the dough on some flour, cut in half and roll out to 2 circles (each approx. 26 cm Ø). Place on 2 baking trays lined with baking paper. Spread tomatoes on top. Cover with prepared ingredients and olives
Bake in the preheated oven (electric oven: 225 °C/circulating air: 200 °C/gas: level 4) for approx. 20 minutes