Heat 1 tablespoon oil in a large skillet or wok over medium-high heat.
Season the chicken with salt and black pepper.
Add the chicken to the skillet and cook for 5–6 minutes, or until golden and cooked through. Remove from the skillet and set aside.
Add the remaining oil to the skillet. Pour in the beaten eggs and scramble until just set.
Add garlic, ginger if using, and frozen peas and carrots. Cook for 2–3 minutes until warmed through.
Add the cold rice and stir well, breaking up any clumps. Cook for 3–4 minutes until hot and lightly toasted.
Stir in soy sauce and sesame oil.
Return the cooked chicken to the skillet and toss everything together.
Stir in green onions and serve hot.