In a small bowl, whisk together the tamari, raw honey, grated fresh ginger, and minced garlic to create the teriyaki glaze.
Cut the chicken breast into bite-sized pieces 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 skillet and sear for 5-6 minutes, stirring occasionally, until golden brown and cooked through.
Remove the chicken from the pan and set aside on a plate.
In the same skillet, add the broccoli florets, sliced red bell pepper, and snap peas, stir-frying for 3-4 minutes until they are tender-crisp.
Return the cooked chicken to the pan and pour the prepared tamari sauce and toasted sesame oil over the mixture.
Toss everything together for 1-2 minutes until the sauce has thickened slightly and coated all ingredients in a glossy glaze.
Serve the stir-fry immediately over the warm cooked brown rice.