Thinly slice onions, green onions, garlic, de-seeded jalapenos and set aside.
Cut chicken into small bite-size pieces, about 1/2 x 1/2 inch and set aside.
In a fry pan, add neutral cooking oil and garlic on medium heat until garlic is fragrant. Next, turn up the heat to medium high and add chicken and sliced onion inside. Sprinkle in salt and black pepper and keep stirring and mixing until chicken is cooked, about 3-5 minutes.
Once the chicken is cooked, add toasted sesame oil while stirring. Remove from heat and mix in green onions and jalapenos. Serve onto a plate and sprinkle toasted sesame seed.