Allow the eggs to cool completely, then peel. Dice the eggs into small pieces, and place in a medium bowl. Add the mayonnaise, dijon mustard, salt and pepper, and mix until combined.
To serve, layer lettuce on top of the bread, then add a scoop of egg salad. Finish with a sprinkling of everything bagel seasoning. Serve immediately.
Notes
*Calorie count does not include the bread for your sandwich