Preheat Oven:
Begin by setting your oven to 375°F (190°C). Lightly coat a 9×13-inch baking dish with cooking spray or oil.
Prepare Filling:
In a sizable mixing bowl, combine the shredded chicken, cooked vegetables, softened cream cheese, and mayonnaise. Season this mixture with garlic powder, onion powder, salt, and pepper. Stir thoroughly until the ingredients are well integrated.
Assemble Rolls:
Unroll the crescent roll dough and divide it into triangles. Place a generous spoonful of the chicken mixture onto the broad end of each triangle. Sprinkle a portion of the shredded cheddar and mozzarella cheeses over the filling.
Roll and Arrange:
Carefully roll each triangle from the wider end toward the tip, enclosing the filling. Place the rolled crescents into the prepared baking dish, ensuring they are arranged in a single layer.
Top with Cheese:
Evenly distribute the remaining cheddar and mozzarella cheeses over the arranged crescent rolls. If desired, sprinkle poppy seeds on top for added texture.
Bake:
Transfer the dish to the preheated oven, baking for 20-25 minutes. The rolls should be golden brown, and the cheese should be melted and bubbling when done.
Garnish and Serve:
Once out of the oven, allow the dish to cool slightly before garnishing with fresh thyme or parsley. Serve the savory crescent roll bake while it is warm and enjoy.