Season the diced chicken breast evenly with the sea salt and black pepper.
Heat a large skillet or wok over medium-high heat and add the toasted sesame oil.
Add the chicken to the hot skillet and cook until golden brown and cooked through, approximately 5-6 minutes. Remove the chicken and set aside on a plate.
In the same skillet, add the diced carrots and sauté for 3 minutes until they begin to soften.
Stir in the minced garlic and grated ginger, cooking for about 30 seconds until the aromatics are fragrant.
Push the vegetable mixture to the outer edges of the skillet and crack the egg into the center, scrambling it until just set.
Add the cooked brown rice, frozen peas, and the cooked chicken back into the skillet.
Drizzle the tamari over the mixture and toss everything together for 2 minutes until the rice is slightly crispy and the dish is heated through.
Garnish with sliced green onions and serve immediately while hot.