Heat oil in a nonstick pan over medium-high heat. Beat the egg with sugar and soy sauce, add the beaten egg to the pan, then add the uncooked rice paper wrapper to the egg, pressing the edges so that the egg sticks to the wrapper. Cook until the egg is set, then remove to a plate.

Smear mayo onto the omelet, then top with spinach, sriracha and sesame seeds. Roll the omelet around in the spinach and serve.