In a small bowl, whisk together the coconut aminos, rice vinegar, honey, sesame oil, chili paste, and arrowroot powder until smooth.
Dice the chicken breast into bite-sized pieces and season evenly with sea salt and black pepper.
Heat a large skillet over medium-high heat and sear the chicken until golden brown and cooked through, then remove from the pan and set aside.
In the same skillet, add the broccoli florets, sliced bell pepper, minced ginger, and minced garlic, sautéing for 3-4 minutes until tender-crisp.
Pour the prepared sauce into the skillet with the vegetables and stir constantly for 1 minute until the sauce thickens into a glossy glaze.
Return the chicken to the skillet and toss to coat everything in the sauce.
Steam the cauliflower rice in a separate pan or microwave until tender, then serve the chicken stir-fry immediately over the warm cauliflower base.