In a small bowl, whisk together the fresh orange juice, tamari, honey, arrowroot powder, minced ginger, and minced garlic to create the orange glaze.
Dice 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 until shimmering.
Add the chicken to the skillet and sauté until golden brown and cooked through, approximately 5 to 7 minutes, then remove from the pan and set aside.
In the same skillet, add the broccoli florets and sliced red bell pepper, cooking for 3 to 4 minutes until they are tender-crisp.
Return the cooked chicken to the skillet and pour the orange glaze over the mixture, stirring constantly for 1 minute until the sauce thickens and becomes glossy.
In a separate small pan, lightly sauté the cauliflower rice over medium heat for 3 minutes until tender but not mushy.
Divide the cauliflower rice into serving bowls, top with the orange chicken stir-fry, and garnish with a sprinkle of sesame seeds.