Dice the chicken breast into small, uniform bite-sized pieces and season thoroughly with sea salt, black pepper, garlic powder, and ground ginger.
Heat the avocado oil in a large skillet or wok over medium-high heat until it begins to shimmer.
Add the seasoned chicken to the pan and sauté for 5-6 minutes, stirring occasionally, until the pieces are golden brown and cooked through, then remove the chicken and set it aside on a plate.
In the same pan, add the diced carrots and sauté for 3 minutes until slightly softened, then stir in the frozen peas and the sliced white parts of the green onions.
Push the vegetable mixture to the outer edges of the pan to create a well in the center.
Crack the egg into the center of the pan and scramble quickly with a spatula until just set, then incorporate it into the surrounding vegetables.
Add the cooked jasmine rice, the reserved chicken, and the toasted sesame oil to the pan, using the spatula to break up any large clumps of rice.
Pour the tamari over the mixture and toss everything together for 2-3 minutes over high heat until the rice is heated through and slightly crispy.
Remove from heat and garnish with the sliced green parts of the green onions before serving immediately.