Heat the avocado oil in a large non-stick skillet or wok over medium-high heat until shimmering.
Add the diced chicken breast to the pan, seasoning with sea salt and black pepper, and sauté until golden brown and cooked through.
Remove the chicken from the pan and set aside on a plate.
In the same pan, add the sesame oil, minced ginger, and garlic, stirring for about 30 seconds until highly fragrant.
Add the chilled jasmine rice and frozen peas and carrots to the pan, pressing the rice down with a spatula to ensure it makes contact with the heat for a crispy texture.
Allow the rice to fry undisturbed for 2 minutes, then stir and fry for another 2 minutes.
Push the rice mixture to the sides of the pan to create a well in the center and pour in the whisked egg.
Scramble the egg in the center until just set, then fold it into the rice and vegetable mixture.
Return the cooked chicken to the pan and drizzle the tamari over the top, tossing everything together for 1 minute to incorporate the flavors.
Remove from heat, garnish with thinly sliced green onions, and serve immediately.