For the chicken in peanut sauce, cook the rice in well-salted water for 12-15 minutes. Strain, add the fat and let it stand covered on the edge of the stove.
In the meantime, peel and coarsely dice the onions and sauté in a little oil until translucent. Cut the fillet into cubes, add to the glazed onion and fry until hot.
Cut leek and chilli into fine rings, chop garlic finely, chop peanuts coarsely and add to the pan with the curry.
Fry everything briefly and deglaze with cream. Stir in peanut butter and season with soy sauce. Let the sauce boil down a bit (if too thin, dust with some cornstarch).