In a small bowl, whisk together the tamari, chili garlic sauce, toasted sesame oil, raw honey, and minced garlic to create the glaze.
Pat the chicken breast dry with a paper towel and cut into 1-inch cubes, then season evenly with sea salt and black pepper.
Heat the avocado oil in a large cast-iron skillet or wok over medium-high heat until shimmering.
Add the chicken to the skillet in a single layer and cook undisturbed for 3-4 minutes to develop a crispy, golden-brown crust.
Flip the chicken and cook for another 2-3 minutes until cooked through, then remove the chicken from the pan and set aside.
Add the broccoli florets, sliced bell peppers, and snap peas to the hot skillet, stir-frying for 3-5 minutes until tender-crisp and bright.
Return the chicken to the skillet and pour the prepared chili-garlic glaze over the meat and vegetables.
Toss everything together for 1 minute until the sauce bubbles and thickens slightly, coating every piece.
Serve the stir-fry immediately over the warm cooked brown rice.