01 - Set oven temperature to 350°F.
02 - In a large mixing bowl, blend shredded chicken, softened cream cheese, shredded cheddar cheese, ranch seasoning, and milk until thoroughly incorporated.
03 - Add half of the crumbled bacon to the mixture and gently fold to combine.
04 - Transfer the prepared mixture to a baking dish. Bake uncovered for 20 to 25 minutes, or until hot and bubbling.
05 - Stir the hot chicken mixture and spoon a generous portion onto the bottom half of each sandwich bun.
06 - Top each with reserved bacon and optional pickles, lettuce, or tomato. Close with the top bun and serve warm.