Cook the pasta in approx. 2 l boiling salted water (approx. 1 teaspoon salt per litre) according to the instructions on the packet. In the meantime peel and wash the carrots and cut them into thin sticks. Clean, wash and cut the leek into fine strips.
Bring the stock to the boil. Add the vegetables and simmer for 6-8 minutes. Drain the pasta, rinse with cold water and drain.
Add the noodles and meat to the stock and heat. Wash the chives, shake dry and cut into small rolls. Season chicken soup with salt and pepper and serve sprinkled with chives.