Drain the oil from the canned tuna using a strainer.
Finely chop the green onion and onion.
Heat sesame oil in a pan and sauté the green onion and onion.
Add the tuna and stir-fry together.
Add gochujang (Korean chili paste), chili powder, soy sauce, and sugar, then stir-fry until the flavors are absorbed.
Add the cooked rice and mix well, stir-frying everything together.
Pour in the spicy chicken sauce and quickly stir-fry.
Serve in a bowl and garnish with seaweed flakes and sesame seeds.