Dice the chicken breast into bite-sized pieces and season with sea salt and black pepper.
In a small bowl, whisk together the tamari, honey, rice vinegar, red chili flakes, minced garlic, and grated ginger to create the sweet chili sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and cook until golden brown and cooked through, about 5-7 minutes, then remove from the pan and set aside.
In the same skillet, add the broccoli, sliced red bell pepper, and snap peas, sautéing for 3-4 minutes until tender-crisp.
Return the chicken to the skillet and pour the sauce over the mixture, tossing constantly for 1 minute until the sauce thickens and glazes the ingredients.
Serve the stir-fry immediately over the warm cooked brown rice.