Begin by cooking the penne pasta according to package instructions in salted boiling water. Drain and set aside once cooked.
In a large skillet over medium heat, cook the chopped bacon until crispy. Remove the bacon with a slotted spoon and place on a paper towel to drain, leaving the bacon grease in the skillet.
In the same skillet, add the cubed chicken, season with salt and pepper, and cook until browned and cooked through, about 5-7 minutes. Ensure the center is no longer pink.
Pour in the heavy cream and chicken broth, then stir in the ranch seasoning mix. Allow the mixture to come to a gentle simmer while stirring.
Once the sauce begins to thicken (about 3-5 minutes), add the cooked pasta and crispy bacon to the skillet, stirring well to combine.
Gradually add the shredded cheddar cheese, stirring until melted and the dish is well coated in the creamy sauce.
Taste and adjust seasoning with more salt and pepper if necessary.
Serve warm, garnished with chopped green onions or parsley if desired.