Bring a good 1/2 l salted water to the boil. Meanwhile wash the meat, dab dry and dice coarsely. Peel and halve the onion and cut into strips. Pour rice into boiling salted water and cook according to package instructions.
Heat the oil in a large frying pan. Brown the meat in it for 3-4 minutes. Add onions and fry for 1-2 minutes. Season with salt and pepper.
Deglaze with coconut milk and 3 tbsp. soy sauce, bring to the boil. Stir in peanut butter. Simmer while stirring for 3-4 minutes. Season to taste with soy sauce and pepper.
Wash the chives, shake dry and cut into fine rolls. Coarsely chop the peanuts. Serve the chicken with the rice. Sprinkle with peanuts and chives.