Step 1: Prepare the Brussels Sprouts

1. Preheat the Oven: Set your oven to 400°F (200°C).
2. Toss the Brussels Sprouts: In a large mixing bowl, add the halved Brussels sprouts. Drizzle with olive oil and season with salt and pepper. Toss well to ensure all sprouts are evenly coated.

Step 2: Roast the Brussels Sprouts

1. Spread on a Baking Sheet: Arrange the Brussels sprouts in a single layer on a baking sheet to ensure even roasting.
2. Roast: Place the baking sheet in the preheated oven and roast for 20-25 minutes, stirring halfway through. The sprouts should be golden brown and tender.

Step 3: Add Honey Glaze

1. Prepare the Glaze: In a small bowl, whisk together honey, garlic powder, and onion powder.
2. Glaze the Sprouts: Once the Brussels sprouts are roasted, remove them from the oven. Drizzle the honey mixture over the sprouts and toss gently to coat.
3. Return to Oven: Place the glazed Brussels sprouts back in the oven for an additional 5 minutes to let the glaze caramelize slightly.

Step 4: Add Chicken and Cheese

1. Fold in the Chicken: Remove the sprouts from the oven and mix in the chopped cooked chicken. Distribute evenly across the baking sheet.
2. Top with Cheese: Sprinkle shredded mozzarella cheese over the top. Return the dish to the oven for another 5 minutes, or until the cheese is melted and bubbly.

Step 5: Garnish and Serve

1. Garnish: Remove the baking sheet from the oven and sprinkle the dish with freshly chopped parsley.
2. Serve Immediately: Transfer to a serving platter or serve straight from the baking sheet for a casual, family-style presentation.