01 - Preheat the oven to 400°F. Lightly grease a 9x13-inch baking dish with nonstick spray or butter.
02 - Arrange the chicken breasts in the prepared baking dish and season both sides evenly with salt and black pepper.
03 - In a medium mixing bowl, blend the softened cream cheese, sour cream, and ranch seasoning mix until smooth and fully combined.
04 - Evenly spread the cream cheese mixture over each chicken breast, ensuring full coverage.
05 - Sprinkle the shredded cheddar cheese generously over the coated chicken breasts.
06 - Bake uncovered for 25–30 minutes until the chicken reaches an internal temperature of 165°F and the cheese is melted and bubbly.
07 - Remove from the oven and immediately top with crumbled bacon and thinly sliced green onions.
08 - Let the dish rest for 5 minutes before serving to allow the sauce to set and flavors to meld.