In a small bowl, whisk together the orange juice, tamari, honey, grated ginger, minced garlic, and arrowroot powder to create the glaze.
Season the diced chicken breast evenly with sea salt and black pepper.
Heat the toasted sesame oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and sauté until golden brown and cooked through, approximately 5 to 7 minutes.
Remove the chicken from the pan and set it aside on a plate.
Add the broccoli florets and sliced red bell pepper to the same skillet with a tablespoon of water to help them steam.
Cook the vegetables for 3 to 4 minutes until they are tender-crisp and vibrant in color.
Return the cooked chicken to the skillet and pour the orange glaze over the chicken and vegetable mixture.
Stir the mixture constantly for 1 to 2 minutes until the sauce thickens and becomes glossy, coating every piece.
In a separate small pan, lightly sauté the cauliflower rice until heated through, then serve the orange chicken over the rice and garnish with sliced green onions.