Preheat your oven to 350°F (175°C).
Lightly grease a 9x13-inch baking dish with butter or cooking spray.
Cook the pasta according to the package directions until al dente.
Drain well and set aside.
Mix until smooth.
Add the cooked pasta, chicken, and crumbled bacon to the bowl.
Stir until everything is evenly coated with the creamy ranch sauce.
Transfer the mixture to the prepared baking dish.
Sprinkle the remaining ½ cup cheddar cheese evenly over the top.
Cover loosely with aluminum foil and bake for 20 minutes.
Remove the foil and bake for another 10 to 15 minutes, or until the cheese is melted, bubbly, and lightly golden.
Let the casserole rest for 5 to 10 minutes before serving.
Sprinkle with chopped parsley and enjoy while warm.