Place eggs in a saucepan and cover with water. Bring to a boil; remove from heat and let eggs stand in hot water for 15 minutes. Remove eggs from hot water. Cool under cold running water; peel eggs. Slice each egg in half lengthwise. Place yolks in a small bowl.
Mix 1/2 cup bacon, onion, dill pickle relish, mayonnaise, mustard, and bacon grease with the egg yolks using a fork; keep the yolks chunky. Stir in salt and black pepper.
Scoop yolk mixture into 24 of the egg white halves. Sprinkle paprika and remaining 1/4 cup bacon on top.