In a small bowl, whisk together the fresh orange juice, orange zest, coconut aminos, rice vinegar, arrowroot powder, minced ginger, and minced garlic to create the glaze.
Pat the chicken breast dry and cut into bite-sized cubes, then season evenly with sea salt and black pepper.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the chicken to the skillet and sear for 4-5 minutes until golden brown and cooked through, then remove the chicken and set aside.
In the same skillet, add the broccoli florets, snap peas, and sliced red bell pepper with a splash of water, covering for 2 minutes to steam-soften.
Remove the lid and sauté the vegetables for another 2 minutes until they are tender-crisp.
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 every piece beautifully.
In a separate small pan, lightly sauté the cauliflower rice with the toasted sesame oil for 3-4 minutes until tender.
Serve the orange chicken and vegetables over the warm cauliflower rice.