Dice the chicken breast into bite-sized pieces and season with sea salt and black pepper.
In a large non-stick skillet or wok, heat half of the sesame oil over medium-high heat.
Whisk the egg in a small bowl, pour into the skillet, and scramble quickly until just set; remove from the pan and set aside.
Add the remaining sesame oil to the skillet and sear the chicken pieces until golden brown and cooked through, about 5-6 minutes.
Stir in the minced garlic, ginger, broccoli, and carrots, sautéing for 3-4 minutes until the vegetables are tender-crisp.
Add the cooked brown rice, frozen peas, and coconut aminos to the pan, stirring constantly to break up any rice clumps and ensure everything is well-coated.
Fold the scrambled egg back into the mixture and cook for another 2 minutes until the peas are heated through.
Garnish with thinly sliced green onions and serve immediately.