In a small bowl, whisk together the coconut aminos, apple cider vinegar, raw honey, minced ginger, minced garlic, and arrowroot powder to create the glaze.
Cut the chicken breast into bite-sized cubes and season evenly with sea salt and black pepper.
Heat the toasted sesame oil in a large non-stick skillet or wok over medium-high heat.
Add the chicken to the skillet and sauté for 5-6 minutes until golden brown and cooked through, then remove the chicken from the pan and set aside.
In the same skillet, add the diced red bell pepper, green bell pepper, red onion, and pineapple chunks, sautéing for 3-4 minutes until the vegetables are tender-crisp.
Return the cooked chicken to the skillet and pour the glaze mixture over the ingredients.
Stir constantly for 1-2 minutes until the sauce thickens and coats everything in a glossy finish.
In a separate small bowl, mix the cooked brown rice and cauliflower rice together, then serve the sweet and sour chicken over the rice blend.