Cook like real CHEFS CHICKEN with POTATOES in the oven

Cook like real CHEFS CHICKEN with POTATOES in the oven . Ingredients: chicken breast 600 g oz) potatoes 500 g oz) onion 200 g (6 oz) oil 20 ml (0. 7 fl oz) salt 5 g oz) black pepper 5 g oz) for the filling: French fries 100 g (3. 5 oz) tomato 1 piece pressed cheese 100 g (3. 5 oz) green onion 40 g (1. 4 oz) sour cream 60 ml ( cup) oil 30 ml (1 fl oz) sweet paprika 5 g oz) Tray diameter 25 cm (10 in) IN THE OVEN 180 C (356 F), 30 minutes