01 - Preheat oven to 400°F. Lightly grease a 9x13-inch baking dish with cooking spray or butter.
02 - In a large skillet over medium heat, cook bacon slices until evenly crisp, about 4 to 5 minutes per side. Transfer to a plate lined with paper towels to drain. Once cooled, crumble into small pieces and set aside.
03 - In a medium mixing bowl, combine the softened cream cheese, sour cream, ranch seasoning mix, garlic powder, black pepper, and half of the shredded cheddar cheese. Stir until the mixture is smooth and well blended.
04 - Place the chicken breasts in the prepared baking dish in a single layer. Spread the cream cheese mixture evenly over each breast, covering the top completely.
05 - Sprinkle the remaining cheddar cheese over the coated chicken breasts. Scatter the crumbled bacon evenly across the top of each piece.
06 - Bake uncovered for 25 to 30 minutes, or until the chicken registers an internal temperature of 165°F and the cheese is bubbling and golden brown on top.
07 - Remove from the oven and let rest for 5 minutes. Garnish with chopped chives or green onions before serving.