Heat 1 tablespoon oil in a wok or large skillet over high heat.
Add chicken. Season with salt and pepper. Cook, stirring, for about 6-7 minutes or until chicken is cooked through.
Add onion powder, garlic powder, ¼ cup teriyaki sauce and 1 tablespoon soy sauce.
Remove from pan. Set aside.
Add 1 tablespoon oil.
When hot, add onions and garlic. Stir fry for about 2 minutes or until the onions are soft.
Add vegetables (carrots, corn and bell peppers or capsicum). Season with salt and pepper.
Stir fry for about 3 minutes or until tender but crisp.
Move the vegetables to one side of the pan.
Add 1 tablespoon teriyaki sauce. Stir fry for one minute.
Add eggs. Scramble and cook for 1-2 minutes.
Mix egg with the vegetables.
Add cooked rice, fried chicken, 2 teaspoons soy sauce and chopped spring onions (scallions). Stir fry for 2 minutes.
Garnish with more spring onions (scallions)