Add chopped bacon to the pan and cook over low heat, stirring, until crisp and set aside. Add the onions and carrots with salt and pepper to the pan, and cook over low heat, stirring, until browned, 8 minutes.
Return the chicken and bacon to the pan. Add the thyme and bay leaves. Slowly add the beer, then add the stock and the vinegar. Cover and simmer over low heat, stirring, until the chicken is fully cooked for about 45 minutes.
Sprinkle with parsley and serve with boiled potatoes. It’s probably best practice to go ahead and enjoy that craft brew with your warming dinner.