In a small bowl, whisk together the orange juice, tamari, honey, minced ginger, and arrowroot powder to create the 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.
Add the chicken to the skillet and sear until golden brown and cooked through, approximately 5-6 minutes, then remove and set aside.
In the same skillet, add the broccoli, bell peppers, and snap peas, sautéing for 3-4 minutes until they are tender-crisp.
Add the minced garlic to the vegetables and cook for 30 seconds until fragrant.
Return the chicken to the skillet and pour the orange glaze over the mixture.
Toss everything together for 1-2 minutes until the sauce thickens and coats the chicken and vegetables beautifully.
Drizzle with toasted sesame oil and serve immediately over the warm cooked brown rice.