In a small bowl, whisk together the fresh orange juice, orange zest, coconut aminos, grated ginger, and minced garlic to create the glaze.
Cut the chicken breast into bite-sized cubes 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 for 5-6 minutes, stirring occasionally, until golden brown and cooked through.
Add the broccoli florets and sliced red bell pepper to the skillet, sautéing for an additional 3-4 minutes until the vegetables are tender-crisp.
Pour the orange glaze over the chicken and vegetables, tossing to coat everything evenly.
Simmer the sauce for 1-2 minutes until it begins to thicken and becomes glossy.
In a separate pan, lightly steam or sauté the cauliflower rice until heated through.
Serve the orange chicken stir-fry over the cauliflower rice and garnish with sesame seeds.