Preheat oven to 375°F.
Steam or boil broccoli for 2 to 3 minutes until slightly tender.
Drain broccoli fully and set aside.
Place a skillet over medium heat.
Add cream cheese to the skillet and allow it to soften.
Pour ranch dressing into the skillet and stir until cream cheese begins to melt.
Add heavy cream and black pepper and stir until the sauce becomes smooth.
Add cooked chopped chicken into the skillet and stir to coat chicken evenly.
Add broccoli florets into the skillet and fold gently into the mixture.
Transfer mixture into a small baking dish and spread evenly.
Sprinkle shredded cheddar across the top.
Place baking dish uncovered into the oven.
Bake 15 to 18 minutes or until cheddar melts and lightly browns.
Remove from oven and sprinkle cooked chopped bacon on top.
Let casserole rest 3 to 5 minutes before serving.