Season chicken with salt and pepper. Heat butter and oil in large skillet. Brown chicken on both sides. Place in crockpot. Boil bacon in small amount of water for 5 minutes. Drain and add to crockpot with remaining ingredients, except mushrooms and parsley. Cover and cook on low for 4 to 6 hours. Correct seasoning during last hour of cooking. Add mushrooms during last 20 minutes of cooking. Garnish with parsley.