Season the chicken all over with salt and freshly ground black pepper. Heat 2 tbsp of the oil in a large lidded frying pan over a medium heat and fry the chicken, skin-side down, for 8-10 mins until the skin is golden. Turn the chicken over and cook for 6-8 mins more until golden all over. Remove to a plate and set aside.

If the pan is dry, drizzle in another 1 tbsp oil, then reduce the heat to medium-low and fry the onions for 8-10 mins until softened but not golden. Stir in the garlic and cook for 1 min more, then add the herbs and cook for another minute. Stir in the flour, then pour in the wine and simmer for 2-3 mins until the alcohol has evaporated. Stir in the stock until everything is combined, then bring the mixture to a simmer and return the chicken breasts to the pan, skin-side up. Cover and simmer for 15-20 mins until the sauce has thickened slightly and the chicken is cooked through. Stir in the cream, return to a simmer, then remove from the heat and scatter over the parsley, if using.