Place eggs in a single layer in a saucepan. Cover with cold water by 1 inch. Bring to a boil over high heat, then immediately remove from heat. Cover and let stand for 10-12 minutes.
Drain the hot water and immediately fill the pan with ice water to stop the cooking process. Let the eggs cool completely, then peel them.
Cut each peeled egg in half lengthwise. Gently scoop out the yolks into a medium bowl.
Add mayonnaise, Dijon mustard, white vinegar, salt, and pepper to the yolks. Mash with a fork until smooth and well combined.
Spoon or pipe the yolk mixture back into the egg white halves.
Top each deviled egg with crumbled bacon and chopped chives.
Chill for at least 30 minutes before serving.
Notes
These deviled eggs can be made a few hours in advance and stored, covered, in the refrigerator. Add the bacon and chives just before serving to keep them crisp.