Preheat oven to 350°F and grease a 9x13 baking dish.
Slice the entire tray of rolls in half horizontally without separating them and place the bottom half in the baking dish.
Layer turkey and provolone cheese evenly over the bottom layer of rolls, then place the top half of the rolls back on.
Whisk together melted butter, Dijon, Worcestershire, garlic powder, and poppy seeds, then brush generously over the tops of the rolls.
Cover tightly with foil and bake for 15 minutes, then uncover and bake another 5 minutes until tops are golden.
Slice apart and serve warm.