Cook the rotini pasta according to package instructions; drain and set aside.
In a large skillet, cook the bacon until crispy; remove and crumble.
In the same skillet, add the shredded chicken and cook for 2-3 minutes.
Add the cooked pasta to the skillet with the chicken.
Pour in the ranch dressing and milk; stir to combine.
Sprinkle in garlic powder, salt, and pepper.
Add the shredded cheddar cheese and mix until melted.
Fold in the crumbled bacon, reserving some for garnish.
Cook for another 2-3 minutes until heated through.
Garnish with fresh parsley and remaining bacon before serving.