Place eggs in a large pot of cold water. Cover with a lid and bring to a boil. Once the water is at a roiling boil, shut off the heat and allow the eggs to sit in the water for 12 to 15 minutes.
Fill up a large bowl with cold water and ice. Scoop the eggs out of the hot water and add them to the bowl of cold water. Let them sit for 2 to 3 minutes.
Peel the hardboiled eggs and cut them in half. Place them on a large tray or cutting board.
Separate the egg yolks into a mixing bowl and place the egg whites back on the tray.
Add the pumpkin puree, mayonnaise, dijon mustard, lemon juice, paprika, salt, and pepper to the egg yolks. Mix them till combined.
Place the egg yolk and pumpkin mixture into a piping bag. Snip the end off the bag and pipe enough egg mixture into the whites to fill the hole but don’t overfill them.
Pipe four lines onto each egg white to resemble the lines of a pumpkin.
Place a small piece of chive and a tiny piece of parsley at the top of each “pumpkin” to resemble the stem.
Serve immediately or save for up to 2 days.