Creating Creamy Chicken Pillows is a straightforward process. Follow these detailed steps for a delicious outcome:

1. Preheat Your Oven: Set your oven to 375°F (190°C) and prepare a baking sheet by greasing it with olive oil.
2. Prepare the Filling: In a large bowl, combine the shredded chicken, cream cheese, cheddar cheese, garlic powder, onion powder, dried parsley, salt, and pepper. Mix until well combined.
3. Roll Out the Pastry: On a lightly floured surface, roll out the puff pastry sheets. Cut each sheet into squares, about 4×4 inches in size.
4. Fill the Pastry: Place a generous spoonful of the chicken mixture in the center of each pastry square.
5. Seal the Pillows: Fold the pastry over the filling to create a triangle or rectangle. Press the edges with a fork to seal them tightly.
6. Brush with Egg Wash: Brush the top of each pillow with the beaten egg for a golden finish.
7. Bake: Place the pillows on the prepared baking sheet and bake in the preheated oven for 30-35 minutes, or until golden brown and puffed.
8. Cool Slightly: Once baked, remove from the oven and allow to cool for a few minutes before serving.

These steps will guide you in creating the creamy, savory delight that is Creamy Chicken Pillows effortlessly.