Step 1: Prepare the Chicken and Sauce Base
Preheat your oven to 350°F (175°C). In a medium bowl, toss the shredded or diced cooked chicken with the Italian seasoning, garlic powder, onion powder, and a pinch of salt and pepper. Set aside. In a large mixing bowl, whisk together the jarred Alfredo sauce, heavy cream, minced garlic, grated Parmesan, melted butter, dried parsley, and nutmeg until completely smooth and combined.

Step 2: Cut and Coat the Biscuits
Open the cans of biscuits. Using kitchen shears or a sharp knife, cut each biscuit into quarters (for smaller, more pull-apart pieces) or sixths (for even more bite-sized pieces). Add all the biscuit pieces to the large bowl with the Alfredo sauce mixture. Using a large spatula or your hands (gently), toss and fold until every piece of biscuit is thoroughly and generously coated in the creamy sauce.

Step 3: Begin Layering in the Baking Dish
Generously grease a 9×13-inch baking dish with non-stick spray or butter. Spread half of the sauce-coated biscuit pieces evenly in the bottom of the dish. Sprinkle the seasoned chicken evenly over this biscuit layer. Then, sprinkle 1 cup of the shredded mozzarella and ½ cup of the Italian cheese blend over the chicken.

Step 4: Create the Second Layer
Evenly distribute the remaining sauce-coated biscuit pieces over the cheese layer. Pour any remaining sauce left in the bowl over the top, ensuring it drips down into the crevices.

Step 5: Add the Final Cheese Blanket
Sprinkle the remaining 1 cup of mozzarella and ½ cup of Italian cheese blend over the top. Finish with an additional generous sprinkle of grated Parmesan cheese (about ¼ cup).

Step 6: Bake to Golden-Brown Perfection
Cover the baking dish tightly with aluminum foil. Bake, covered, for 30 minutes. This allows the biscuits to steam and cook through in the sauce without the top over-browning. After 30 minutes, carefully remove the foil. Increase the oven temperature to 375°F (190°C) and continue baking, uncovered, for an additional 20-25 minutes, or until the top is a deep, golden brown, the cheese is bubbling, and the biscuits in the center are fully cooked (a toothpick inserted should come out clean, not doughy).

Step 7: Rest, Garnish, and Pull Apart!
Remove the bake from the oven and let it rest for 10-15 crucial minutes. This allows the layers to set slightly for cleaner serving and prevents mouth burns from molten cheese. Garnish with fresh parsley, chives, and a pinch of red pepper flakes if desired. Serve directly from the dish, encouraging everyone to pull apart delicious, cheesy sections with forks or serving spoons.