01 - Place eggs in a large saucepan, add enough cold water to cover by 1 inch, and bring to a boil over medium-high heat. When boiling, cover, remove from heat, and let eggs stand off heat for 10 to 12 minutes.
02 - Drain hot water and cool eggs under cold running water. Peel shells carefully to keep whites intact.
03 - Slice eggs lengthwise and gently remove yolks, setting whites aside. Transfer yolks to a mixing bowl.
04 - Mash yolks with a fork until fine. Add mayonnaise, Dijon mustard, white wine vinegar, garlic powder, salt, and black pepper. Mix thoroughly until very smooth and creamy.
05 - Spoon or pipe the yolk mixture generously into the egg white halves, mounding the filling slightly for visual appeal.
06 - Sprinkle paprika over the filled eggs to create an orange pumpkin look. Using a toothpick, gently score vertical lines to simulate pumpkin ridges.
07 - Insert a small piece of chive at the top of each egg to form a pumpkin stem. Optionally, add a thin carrot strip as a decorative leaf or vine.
08 - Arrange the finished eggs on a serving platter and serve immediately.