01 - Preheat oven to 350°F (180°C).
02 - In a large mixing bowl, thoroughly mix the shredded chicken, softened cream cheese, cheddar cheese, ranch seasoning, and milk until smooth and well blended.
03 - Fold in half of the crumbled bacon into the chicken mixture.
04 - Transfer the mixture to a baking dish and bake uncovered for 20 to 25 minutes, until heated through and bubbling.
05 - Stir the mixture, then portion onto the bottom halves of the sandwich buns.
06 - Top each portion with reserved bacon and additional pickles, lettuce, or tomato as desired. Place the top bun and serve warm.