Get a big pot, pour the oil and heat it on a medium temperature. Pour the onion and paprika and fry for about 5 minutes. Put in the garlic and chili. Stir and cook for another minute.
Sprinkle the chicken with salt and pepper. Put the chicken in a frying pan and cook each side for about 4 minutes. Pour vinegar and tomatoes, let it boil. Reduce the flame and stir while cooking. It should take about 25 minutes for the dish to be ready.