Prepare the stir-fry sauce by whisking together the tamari, honey, minced fresh ginger, and minced garlic in a small bowl.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Dice the chicken breast into bite-sized pieces and season with sea salt and black pepper.
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 it 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 skillet and pour the prepared tamari sauce over the chicken and vegetables.
Toss everything together for 1-2 minutes until the sauce has thickened slightly and evenly coats the stir-fry.
Remove from the heat, drizzle with the toasted sesame oil, and garnish with sesame seeds before serving.