Peel, wash and slice the potatoes. Line a baking tray with baking paper. Put potato slices on top. Cook in the preheated oven (electric cooker: 200 °C/ circulating air: 175 °C/ gas: level 3) for about 20 minutes.
Clean and wash the zucchini and cut them lengthwise into 12 slices of about 1/2 cm thick. Heat 1 tablespoon of oil in a coated pan. Fry the zucchini slices briefly in it, remove. Cut feta cheese into 12 slices.
Drain the roasted peppers. Halve 6 peppers lengthwise. Place the zucchini slices and the peppers on top of each other. Place a piece of feta cheese on each and roll up. Put 3 rolls on each skewer.
Heat 1 tablespoon of oil in a frying pan and fry the skewers for about 4 minutes. Sprinkle with thyme. Finely chop or puree the rest of the pepper. Stir into the quark. Season to taste with salt and pepper.
Season potato wedges with salt and pepper. Arrange skewers and potatoes on plates with a dash of curd cheese. Add the rest of the curd cheese.