Preheat oven to 375°F (190°C).
In a bowl, mix chicken, cheddar cheese, cream cheese, sour cream, garlic powder, onion powder, salt, and pepper until well combined.
Unroll crescent dough and separate into 8 triangles.
Spoon chicken mixture onto the wide end of each triangle and roll up gently, tucking in the sides.
Place on a baking sheet lined with parchment paper.
Brush tops with melted butter and sprinkle with parsley if desired.
Bake for 12 to 15 minutes or until golden brown and heated through.
Let cool slightly and serve warm, perfect with a side salad or dipping sauce.