Preheat the oven to 350°F (175°C).
In a mixing bowl, combine the softened cream cheese with 2 tablespoons of the melted butter until smooth.
Stir the chopped cooked chicken, milk, and pepper into the cream cheese mixture until evenly combined; set aside.
Unroll the crescent roll dough and separate into 4 rectangles by pressing the perforations to seal into rectangles.
Divide the chicken mixture into four portions and spoon one portion into the center of each rectangle.
Bring the corners of each rectangle together over the filling and gently twist or pinch to seal into a packet.
Brush each packet with the remaining 1 tablespoon of melted butter, then press each packet into the crushed seasoned croutons to coat the exterior.
Place the packets on an ungreased baking sheet and bake uncovered for 20–25 minutes, or until golden brown.
Remove from the oven and let cool slightly before serving.