In a small bowl, whisk together the coconut aminos, rice vinegar, pineapple juice, honey, and arrowroot powder until smooth; set aside.
Cut the chicken breast into bite-sized cubes and season evenly with sea salt and black pepper.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and sear for 5-6 minutes, stirring occasionally, until golden brown and cooked through.
Add the sliced bell peppers, snap peas, and pineapple chunks to the skillet, sautéing for 3-4 minutes until the vegetables are tender-crisp.
Stir in the minced garlic and grated fresh ginger, cooking for 1 minute until fragrant.
Pour the prepared sauce over the chicken and vegetables, tossing constantly for 1-2 minutes until the sauce thickens and becomes glossy.
Remove from heat and serve immediately.