Place the eggs in a saucepan filled with cold water, then bring to a boil. Put a lid on, turn off the heat and rest for 6 minutes. Drain, then rinse the eggs under cold water.
Crack the shells, then carefully peel the eggs.
Halve the eggs lengthwise, then spoon out the yolks into a small bowl. Add the mayo, mustard, lemon juice, salt and pepper and mix until you get a smooth, fluffy cream.
Fill the egg whites with the mixture and smooth the tops. Using a skewer, draw ridges down the yolk to look like a pumpkin.
Dust them with paprika - try to cover only the yolk.
Place a piece of chive on top of the egg yolk to look like a stem.
Put the devilled eggs onto a platter and serve.