Peel the hard-boiled eggs and chop them into small pieces.
Place the chopped eggs in a medium mixing bowl.
Add mayonnaise, pickle juice, and Dijon mustard.
Stir gently until everything is well combined.
Season with salt and black pepper to taste.
Cover and refrigerate until ready to serve.
To assemble the Egg Salad Sandwich Recipe, place lettuce leaves on toasted bread.
Spoon the egg salad mixture over the lettuce.
Top with chives and additional black pepper if desired.
Serve immediately and enjoy.