Dice the chicken breast into bite-sized pieces and season evenly with garlic powder, ground ginger, sea salt, and black pepper.
Heat a large skillet or wok over medium-high heat and add the toasted sesame oil to coat the surface.
Add the seasoned chicken to the skillet and cook until golden brown and cooked through, then remove the chicken and set it aside.
In the same skillet, sauté the diced carrots and frozen peas for 3-4 minutes until they are tender-crisp.
Push the vegetables to the outer edges of the pan, crack the egg into the center, and scramble until just set.
Return the cooked chicken to the skillet along with the cooked brown rice and pour the coconut aminos over the top.
Toss all ingredients together for 2-3 minutes, stirring constantly until the rice is heated through and the flavors are well-combined.
Thinly slice the green onions, garnish the fried rice, and serve immediately while hot.