In a bowl mix dressing, pepper, salt, basil, and parsley; pour into the pot of a slow cooker. Place chicken into sauce mixture, and then flip chicken over so that both sides are saucy. Cover and cook on high for 5-6 hours, or low for 7-8 hours.Remove chicken from slow cooker and shred using 2 forks. There will be some sauce left in the slow cooker, reserve in a bowl and set aside.To assemble your salads, divide the lettuce into fourths, then place into bowls/plates. Top each salad with ¼ of the diced tomatoes, ¼ of the green onions, a couple TBS of cheese, and then spoon 2 TBS of warm sauce over the top (the sauce that you reserved from the crock pot).Garnish with black pepper if desired and serve a slice of bread along the side.