Dice the chicken breast into small, uniform bite-sized pieces and season thoroughly with sea salt, black pepper, garlic powder, and ground ginger.
Heat a large non-stick skillet or wok over medium-high heat and add half of the toasted sesame oil.
Add the seasoned chicken to the pan and sauté for 5-6 minutes until golden brown and cooked through, then remove the chicken from the pan and set aside.
Wipe the pan if necessary, add the remaining sesame oil, and crack the eggs directly into the skillet, scrambling them quickly until they are just set but still soft.
Add the cooked brown rice and the frozen peas and carrots to the skillet with the eggs, stirring constantly for 2-3 minutes to break up the rice and heat the vegetables.
Return the cooked chicken to the pan and drizzle the tamari over the mixture, tossing everything together for another 2 minutes until the rice is slightly toasted.
Fold in the sliced green onions just before removing from heat and serve immediately.