Wash the thyme, pluck it. Wash the chicken, dab dry and cut into 8-10 pieces. Fry in a frying pan in hot oil all around. Season with salt, pepper and paprika
Add 1/8-1/4 l water and tomatoes with juice. Add thyme. Cover and cook in the preheated oven (electric cooker: 200 °C/circulating air: 175 °C/gas: level 3) for about 1 hour
Peel potatoes, wash and quarter them lengthwise. After approx. 20 minutes add to the chicken and braise
Clean, wash and cut the leek into pieces. After another 20 minutes add to the chicken and also braise. Season and arrange everything again
You can also use chicken parts (e.g. legs and wings) for the casserole instead of a whole chicken