Whisk the orange juice, tamari, honey, grated ginger, minced garlic, and arrowroot powder in a small bowl until smooth.
Cut the chicken breast into bite-sized pieces and season 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 cook 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, bell peppers, and snap peas to the same skillet and stir-fry for 3 to 4 minutes until tender-crisp.
Return the chicken to the pan and pour the orange glaze over the mixture.
Simmer for 1 to 2 minutes until the sauce thickens and coats the chicken and vegetables evenly.
In a separate small pan, lightly sauté the cauliflower rice for 3 minutes until heated through.
Divide the cauliflower rice into bowls, top with the orange chicken stir-fry, and garnish with sesame seeds.