Whisk together the orange juice, coconut aminos, honey, grated ginger, minced garlic, and arrowroot powder in a small bowl to create the glaze.
Season the diced chicken breast with sea salt and black pepper.
Heat avocado oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and sear until golden and cooked through, approximately 5-6 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, sautéing for 3-4 minutes until they are crisp-tender.
Pour the orange glaze into the skillet with the vegetables and simmer for 1 minute until the sauce thickens and becomes glossy.
Return the chicken to the skillet, tossing well to coat every piece in the orange glaze.
In a separate pan or microwave-safe bowl, lightly steam the cauliflower rice until tender.
Serve the orange chicken and vegetables over the cauliflower rice, garnished with sesame seeds and sliced green onions.