Pat the chicken breast dry with a paper towel and cut into 1-inch bite-sized cubes.
Season the chicken cubes evenly with sea salt and black pepper.
In a small bowl, whisk together the tamari, sesame oil, chili garlic sauce, honey, minced garlic, and grated ginger to create the stir-fry sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the chicken to the skillet in a single layer and sear for 3-4 minutes until golden brown and cooked through, then remove and set aside.
In the same skillet, add the broccoli, bell pepper, and snap peas, sautéing for 3-5 minutes until tender-crisp.
Return the chicken to the skillet and pour the sauce over the mixture, tossing for 1 minute until everything is glazed and fragrant.
Serve the stir-fry over the warm cooked brown rice and garnish with sesame seeds.