01 - Preheat oven to 350°F.
02 - In a large mixing bowl, thoroughly blend shredded chicken breast, softened cream cheese, shredded cheddar cheese, ranch seasoning mix, and milk until homogenous.
03 - Fold half of the crumbled bacon evenly into the mixture.
04 - Transfer mixture to a baking dish and bake uncovered for 20 to 25 minutes, until hot and bubbling.
05 - Stir the hot filling, portion the creamy chicken mixture onto the bottom half of each sandwich bun.
06 - Top with remaining crumbled bacon and, if desired, add pickles, lettuce, or tomato before covering with the top bun. Serve warm.