Whisk coconut aminos, honey, minced ginger, garlic, and arrowroot powder in a small bowl until smooth.
Season diced chicken breast with sea salt and black pepper.
Heat sesame oil in a large skillet over medium-high heat.
Add the chicken to the skillet and cook until golden brown and cooked through.
Add the broccoli florets and a splash of water to the pan, then cover with a lid for 2 minutes to steam until tender-crisp.
Remove the lid and pour the sauce mixture over the chicken and broccoli.
Stir constantly for 1 minute until the sauce thickens into a glossy glaze.
In a separate small pan, lightly sauté the cauliflower rice for 3-4 minutes until tender.
Serve the teriyaki chicken and broccoli over the cauliflower rice and garnish with sesame seeds.