Whisk the coconut aminos, honey, minced ginger, minced garlic, and arrowroot powder in a small bowl until smooth to create the glaze.
Season the diced chicken breast evenly with the sea salt and black pepper.
Heat the toasted sesame oil in a large skillet or wok over medium-high heat until shimmering.
Add the chicken to the skillet and sear until golden brown and cooked through, approximately 6 to 8 minutes.
Remove the chicken from the pan and set aside; add the broccoli, bell peppers, and snap peas to the same skillet with a splash of water.
Stir-fry the vegetables for 3 to 4 minutes until they are bright green and tender-crisp.
Return the chicken to the pan and pour the prepared glaze over the mixture, tossing until the sauce thickens and coats everything evenly.
In a separate small pan, lightly sauté the cauliflower rice for 2 minutes until just tender.
Serve the teriyaki stir-fry over the warm cauliflower rice and garnish with sesame seeds.