01 -
Preheat oven to 425°F. Lightly coat a 9x13 inch baking dish with nonstick spray and set aside.
02 -
In a large mixing bowl, whisk together 15 ounces Alfredo sauce, 1 tablespoon chopped parsley, ranch dressing mix, and freshly cracked black pepper until smooth.
03 -
Stir in shredded chicken, ½ cup crumbled bacon, 1½ cups grated mozzarella, and ¼ cup grated Parmesan cheese until fully incorporated.
04 -
Spoon 1½ to 2 tablespoons of the filling into each cooked jumbo shell. Arrange filled shells in the prepared baking dish in rows approximately 3 shells across and 8 to 9 shells down.
05 -
Pour 22 ounces Alfredo sauce evenly over the stuffed shells. Sprinkle remaining 1½ cups mozzarella, ¼ cup Parmesan, and ¼ cup crumbled bacon evenly on top.
06 -
Cover the baking dish with aluminum foil and bake for 20 minutes at 425°F.
07 -
Remove foil, increase oven to broil, and return dish to oven. Broil for 3 to 4 minutes, watching closely until topping is golden brown.
08 -
Sprinkle ½ tablespoon fresh chopped parsley over the top. Serve immediately while hot.