Slice onion and red/yellow peppers and sauté with a good splash of olive oil. Cook halfway, shut off flame and put aside.
Cut the chicken breast into medium sized pieces, pass through flour and add the onion and peppers. Continue to cook on medium heat until chicken is cooked through. Add a good splash of white vinegar, a splash of red wine vinegar and reduce until it resembles a thick looking glaze. Season with salt / pepper and chopped parsley and serve.
Serve with rice.