Preheat oven to 375 degrees and grease a 9×13 baking dish.
Make the cream cheese mixture. In a bowl or measuring cup, add the greek yogurt, softened cream cheese, garlic powder, onion powder, dried parsley, and some salt and pepper and stir until well combined.
Assemble casserole. Add broccoli florets, chicken, rice, cream cheese mixture, broth, and salt and pepper to your casserole dish and mix well to combine, making sure everything is evenly distributed. It helps to spread the broccoli across the bottom, then spread the chicken, and so on as it makes it easier to mix and ensure the ingredients are evenly distributed. Push down the ingredients as they should be mostly covered by the liquid.
Bake. Cover with aluminum foil and bake for 30 minutes. Remove the foil and cook for another 10-15 minutes uncovered until most of the liquid is absorbed and the rice and veggies are cooked. Remove from the oven and sprinkle with shredded cheese. Bake for another 5 minutes until the cheese is melted. Let cool for 5-10 minutes and slice into 8 equal-size pieces.
Enjoy! Top with your favorite toppings and enjoy!