Heat one tablespoon of vegetable oil in a large wok or non-stick skillet over medium-high heat.
Add the diced chicken and cook until browned and cooked through, approximately 5 minutes. Remove chicken from the pan and set aside.
Add the remaining tablespoon of oil to the pan. Sauté the onion, garlic, and peas and carrots for 2 minutes until the onion is translucent.
Push the vegetable mixture to the sides of the wok. Pour the beaten eggs into the center and scramble until just set.
Incorporate the rice into the wok, using a spatula to break up any clumps.
Return the cooked chicken to the pan and toss with the rice and vegetables.
Add the soy sauce, oyster sauce, sesame oil, and white pepper. Stir-fry over high heat for 3 minutes until the rice is well-coated and heated through.
Remove from heat, garnish with sliced green onions, and serve immediately.