Wash the chicken, dab dry and season with salt and pepper inside and out. Roast in the preheated oven (electric cooker: 200 °C/ gas: level 3) for about 1 1/4 hours. In the meantime, peel and wash the potatoes and cut them into slices.
Clean, wash and slice the zucchini. Peel, wash and slice the carrots diagonally. Add everything to the chicken about 20 minutes before the end of the frying time. Sprinkle with salt and pepper, turning from time to time.
Wash the thyme and dab dry. Put something aside for garnishing, dab off the remaining leaves. Mix olive oil, paprika and thyme leaves. Spread the marinade on the chicken after 45 minutes.
Arrange the chicken with the vegetables on a plate, garnish with thyme.