Cut the chicken breast into bite-sized 1-inch cubes and season evenly with sea salt and black pepper.
Heat the avocado oil in a large skillet or wok over medium-high heat until it begins to shimmer.
Add the chicken to the pan and sear for 5-6 minutes, stirring occasionally, until golden brown and cooked through.
Remove the cooked chicken from the pan and set it aside on a clean plate.
In the same pan, add the broccoli, bell peppers, and snap peas, sautéing for 3-4 minutes until they are tender-crisp.
Return the chicken to the pan and sprinkle with the garlic powder and ground ginger.
Drizzle the coconut aminos and toasted sesame oil over the mixture, tossing everything together for 1 minute to glaze the ingredients.
Serve immediately while hot and the vegetables are still bright and crunchy.