Soak rolls in cold water. Peel and finely chop the onion. Drain the pineapple on a sieve, collecting the juice. Cut the pineapple into pieces. Clean and wash the leek.
Cut 1 stick into fine rings. Knead minced meat, egg, onion and squeezed out roll. Season with salt, pepper and chilli powder. Mix the leek rings, half of the peanuts and 1/3 of the pineapple pieces into the minced mass and form into a loaf.
Place on a greased baking tray and bake in a preheated oven (electric range: 200 °C/ gas: level 3) for 1 hour. After 45 minutes of roasting time, place the remaining peanuts on the meatloaf and press down slightly.
In the meantime, clean, wash and cut the chilli pepper into pieces. Chop the rest of the leek. Heat the oil in a pan. Sauté the leek, pineapple and chilli in it while turning. Add the rest of the pineapple and steam briefly for about 5 minutes.
Deglaze with the Chinese sauce in about 5 tablespoons of pineapple juice and bring to the boil. Season to taste with salt, pepper and chilli. Arrange the meatloaf with the vegetables on a plate. Garnish with parsley and chillies.