Pat the chicken breast dry with a paper towel and cut into bite-sized cubes.
In a small bowl, toss the chicken cubes with arrowroot powder, sea salt, and black pepper until evenly coated.
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, turning occasionally until the edges are golden and crispy.
Remove the chicken from the pan and set aside.
Add the sliced bell peppers, snap peas, and pineapple chunks to the same skillet, sautéing for 3 minutes until tender-crisp.
In a small jar, whisk together the coconut aminos, rice vinegar, honey, grated ginger, and minced garlic.
Pour the sauce into the skillet with the vegetables and simmer for 1 minute until it begins to thicken.
Return the crispy chicken to the skillet and toss everything together to glaze thoroughly.
Serve the stir-fry immediately over the warm cooked white rice.