Dice the chicken breast into small, uniform bite-sized pieces and season with sea salt and black pepper.
Heat a large non-stick skillet or wok over medium-high heat and add half of the toasted sesame oil.
Add the chicken to the skillet and sear until golden brown and cooked through, then remove and set aside.
In the same skillet, add the remaining oil along with finely minced garlic, grated ginger, diced carrots, and the white parts of the green onion.
Sauté for 2-3 minutes until the carrots are slightly tender, then stir in the frozen peas and the chilled cooked rice.
Press the rice down into the pan and let it sit undisturbed for 2 minutes to develop a crispy texture.
Push the rice to one side of the pan and crack the egg into the empty space, scrambling it quickly until set.
Toss everything together with the tamari and the cooked chicken, ensuring the rice is well coated and steaming hot.
Garnish with the green tops of the onions and sesame seeds before serving.