Preheat your oven to 350°F (175°C).
In a large bowl, combine the cooked chicken, crumbled bacon, cream of chicken soup, and ranch dressing.
Add the shredded cheese and stir until well mixed.
Fold in the frozen mixed vegetables and cooked pasta.
Season with garlic powder, onion powder, salt, and pepper.
Transfer the mixture into a greased 9x13 inch baking dish.
Spread evenly and top with additional cheese if desired.
Bake uncovered for 25-30 minutes, or until bubbly and golden on top.
Let it cool for a few minutes before serving.
Enjoy your delicious casserole hot!