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 non-stick skillet or wok over medium-high heat until it begins to shimmer.
Add the chicken to the skillet and sear until golden brown and fully cooked through, then remove the chicken and set it aside on a plate.
In the same skillet, add the diced white onion and frozen peas and carrots, sautéing for 3-4 minutes until the onions are translucent.
Stir in the minced garlic and grated fresh ginger, cooking for just 30 seconds until the mixture becomes highly aromatic.
Push the vegetable mixture to the outer edges of the pan and crack the egg into the center, scrambling it quickly until just set.
Add the chilled jasmine rice and the cooked chicken back into the pan, using a spatula to break up any large clumps of rice.
Drizzle the coconut aminos and sesame oil over the mixture, tossing everything together over high heat for 2 minutes to achieve a crispy texture.
Remove from heat and garnish with toasted sesame seeds and sliced green onions before serving immediately.