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