Hard-cook eggs; cool and peel.
Chop eggs into small pieces and set aside.
Mix mayonnaise, Italian dressing, scallion and red pepper flakes together until well blended.
Cut croissants in half lengthwise and place lettuce leaves inside; spread half of the mayonnaise mixture on lettuce leaves.
Mix the remaining half of the mayonnaise mixture with the eggs; divide and place on top of lettuce.
Cover with top half of croissant, serve and enjoy!