Preheat oven to 375°F (190°C).

Line a baking sheet with parchment paper.

Add shredded chicken, cheddar cheese, mayonnaise, chopped green onions, garlic powder, and black pepper to a large bowl.

Mix until the filling becomes smooth and well combined.

Unroll the crescent dough and separate it into eight triangles.

Place two to three tablespoons of the chicken mixture onto the wide end of each dough triangle.

Roll each triangle from the wide end toward the pointed end.

Tuck the edges slightly to keep the filling sealed inside.

Arrange the stuffed crescents on the baking sheet, leaving space between each one.

Sprinkle grated Parmesan cheese on top of each roll.

Bake for twelve to fifteen minutes or until the crescents turn golden brown.

Remove the tray from the oven and allow the rolls to cool for two to three minutes.

Add fresh parsley on top if desired, then serve warm.