Dice the chicken breast into small, uniform bite-sized pieces and season with sea salt and black pepper.
Heat a large skillet or wok over medium-high heat and add half of the sesame oil.
Add the seasoned chicken to the skillet and sauté until golden brown and cooked through, then remove and set aside.
Add the remaining sesame oil to the skillet along with the diced carrots and peas, sautéing for 3-4 minutes until tender-crisp.
Add the chilled jasmine rice, garlic powder, and ginger to the pan, stirring constantly to break up any clumps and toast the rice slightly.
Push the rice and vegetable mixture to the sides of the pan to create a well in the center.
Crack the egg into the center and scramble until just set, then fold the egg and the cooked chicken back into the rice mixture.
Drizzle the coconut aminos over the rice and toss everything together until well combined and heated through.
Garnish with thinly sliced green onions and serve immediately.