Pat the chicken breast dry and cut into bite-sized cubes.
In a small bowl, toss the chicken with sea salt, black pepper, and arrowroot powder until evenly coated.
Whisk together the coconut aminos, rice vinegar, honey, minced ginger, and minced garlic to create the sauce.
Heat the sesame oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and cook until golden and crispy on all sides, then remove and set aside.
In the same skillet, sauté the bell peppers, snap peas, and pineapple for 3-4 minutes until the vegetables are tender-crisp.
Return the chicken to the pan and pour the sauce over the mixture, stirring constantly until the sauce thickens and glazes the ingredients.
Serve the stir-fry immediately over a bed of warm brown rice.