Simple and delicious breakfast! Omelette with chicken and vegetables!

Ingredients:
Chicken breast - 130 g.
Vegetable oil
Onion - 1/2 pc.
Pepper - 1/2 pc.
Tomato - 1 pc.
Salt
Black pepper
sweet pepper
Parsley
Eggs - 3 pcs.
Salt
Milk - 20 g.
Mozzarella
Bon appetit!