Dice the chicken breast into small, uniform bite-sized pieces and season evenly with sea salt, black pepper, garlic powder, and ground ginger.
Heat the avocado oil in a large non-stick skillet or wok over medium-high heat until shimmering.
Add the seasoned chicken to the skillet and sauté for 5 to 6 minutes, stirring occasionally, until golden brown and cooked through.
Remove the chicken from the pan and set aside on a plate; add the diced carrots and frozen peas to the same skillet, cooking for 3 minutes until tender-crisp.
Push the vegetables to the outer edges of the pan and crack the egg into the center, scrambling it quickly with a spatula until just set.
Incorporate the chilled jasmine rice and the cooked chicken back into the skillet, using the spatula to break up any clumps of rice.
Drizzle the tamari over the mixture and toss all ingredients together for 2 minutes until the rice is heated through and the flavors are well combined.
Remove from heat, garnish with the sliced green onions, and serve immediately while hot.