Dice the chicken breast into bite-sized pieces and season evenly with sea salt and black pepper.
In a small mixing bowl, whisk together the fresh orange juice, orange zest, coconut aminos, minced ginger, minced garlic, and arrowroot powder to create the glaze.
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 the chicken and set aside.
In the same skillet, add the broccoli florets, sliced bell peppers, and snap peas, sautéing for 3 to 4 minutes until they are tender-crisp.
Return the cooked chicken to the skillet and pour the orange glaze over the chicken and vegetable mixture.
Toss everything together for 1 to 2 minutes until the sauce thickens and develops a glossy sheen that coats the ingredients.
In a separate small pan, lightly sauté the cauliflower rice with the toasted sesame oil for 2 to 3 minutes until heated through and fragrant.
Divide the cauliflower rice into bowls, top with the orange chicken stir-fry, and garnish with sesame seeds and thinly sliced green onions.