Dice the chicken breast into small, uniform bite-sized pieces and season evenly with sea salt and black pepper.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the chicken to the pan and sauté for 5-6 minutes until golden brown and cooked through, then remove the chicken and set aside.
In the same pan, add the sesame oil, minced garlic, grated fresh ginger, and diced carrots, sautéing for 2 minutes until fragrant.
Add the chilled brown rice and frozen peas to the skillet, spreading the rice out and pressing down firmly with a spatula to allow it to crisp for 3 minutes.
Push the rice mixture to one side of the pan, crack the egg into the empty space, and scramble it quickly until just set.
Return the cooked chicken to the pan, drizzle with coconut aminos, and toss everything together for 1 minute.
Garnish with thinly sliced green onions and serve immediately while hot.