Dice the chicken breast into 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 transfer to a plate.
In the same pan, add the minced garlic, grated ginger, and the white parts of the sliced scallions, sautéing for 1 minute until aromatic.
Add the diced carrots and frozen peas to the pan, stirring frequently for 3 minutes until the carrots are tender-crisp.
Push the vegetables to the outer edges of the pan and crack the egg into the center, scrambling quickly until fully set.
Add the cooked brown rice, cooked chicken, tamari, and toasted sesame oil to the skillet.
Toss all ingredients together over high heat for 2-3 minutes until the rice is slightly crispy and the flavors are well combined.
Remove from heat and garnish with the sliced green tops of the scallions before serving hot serving.