Whisk the fresh orange juice, orange zest, coconut aminos, honey, minced ginger, minced garlic, and red pepper flakes in a small bowl to create the glaze.
Season the diced chicken breast evenly with sea salt and black pepper.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
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 aside, then add the broccoli, snap peas, and sliced bell peppers to the same skillet.
Sauté the vegetables for 3 to 4 minutes until they are tender-crisp and vibrant.
Return the chicken to the skillet and pour the orange glaze over the mixture, tossing well to coat.
Simmer for 2 minutes until the sauce thickens slightly and becomes glossy.
Serve the stir-fry over a bed of warmed cauliflower rice and garnish with sliced green onions and sesame seeds.