Mix all the ingredients for the lemongrass chicken section together in a large ziplock bag or bowl. Set in the refrigerator to marinate for at least 1 hour.
Meanwhile, whisk together all the ingredients for the wasabi mayo and set aside in the refrigerator in a sealed container.
Add all ingredients for the cucumber salad to a large mixing bowl. Mix together until well combined. Set aside in the refrigerator until you’re ready to use.
Pour enough oil into a large pot to fry the wonton wrappers. Heat the oil to 350F. Add the wonton wrappers, 3 or 4 at a time, for 1 - 2 minutes or until slightly golden. Remove with a wire skimmer or slotted spoon and set on paper towels to drain.
Once the chicken is marinated, remove the thighs from the marinade and either sear them in a large skillet or grill on a medium-heat grill. Make sure to check internal temperature has reached 165F before removing from heat. Slice the chicken into bite-sized pieces.
To assemble the wonton bites simply place desired amount of chicken on each wonton, then 4 - 5 slices of the cucumber salad on each, then a drizzle of the wasabi mayo to finish. Enjoy immediately.