Wash the chicken filet, dab dry and cut in half. Clean and wash the leek and remove 8 leaves. Blanch leaves for 1 minute in boiling water, drain. Season chicken fillets with salt and pepper and wrap each with 1 leek leaf. Stick firmly with wooden skewers. Cut remaining leek into rings.
Put rice in plenty of boiling salted water and cook for 20 minutes. Heat 3 tablespoons of oil in a pan. Fry the chicken crisps for about 12 minutes. Cut mozzarella into 6 slices and halve. Place on the chicken and fry covered for another 4 minutes at low heat. Heat 1 tablespoon of oil in a saucepan. Brown the leek rings in it, steam for 1 minute. Add tomato pieces and tomato paste, bring to the boil. Season with salt, pepper and marjoram. Refine with cream. Pour rice on a sieve and drain.
Heat 1 tablespoon of oil in a saucepan. Brown the leek rings in it, steam for 1 minute. Add tomato pieces and tomato paste, bring to the boil. Season with salt, pepper and marjoram. Refine with cream. Pour rice on a sieve and drain. Arrange chicken crumbs, tomato sauce and rice on plates. Garnish with parsley