Dice the chicken breast into bite-sized pieces and season with sea salt and black pepper.
In a small bowl, whisk together the coconut aminos, rice vinegar, tomato paste, raw honey, minced ginger, and minced garlic to create the sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and cook for 5-6 minutes until golden brown and cooked through, then remove and set aside.
In the same skillet, add the bell peppers, snap peas, and pineapple chunks, sautéing for 3-4 minutes until the vegetables are tender-crisp.
Return the chicken to the skillet and pour the sauce over the mixture, stirring constantly for 2 minutes until the sauce thickens and coats everything evenly.
In a separate small pan, lightly sauté the cauliflower rice for 3 minutes until warmed through.
Serve the sweet and sour chicken stir-fry immediately over the bed of cauliflower rice.