Heat a large skillet or wok over medium-high heat with half of the toasted sesame oil.
Add the diced chicken breast to the pan, season with sea salt and black pepper, and sauté until golden brown and cooked through.
Remove the cooked chicken from the pan and set it aside on a plate.
Add the remaining sesame oil to the skillet along with the diced carrots, minced garlic, and grated ginger, sautéing until fragrant.
Push the vegetables to the edge of the pan and crack the egg into the center, scrambling it quickly until it is just set.
Incorporate the chilled jasmine rice, frozen peas, and the cooked chicken back into the pan, breaking up any clumps of rice with a spatula.
Drizzle the tamari over the mixture and toss everything together for 2-3 minutes until the rice is heated through and slightly crispy.
Remove from heat and garnish with thinly sliced green onions before serving warm.