Cube the chicken breast into 1-inch pieces and place in a medium bowl.
Toss the chicken with arrowroot powder, sea salt, and black pepper until every piece is evenly coated.
In a small jar or bowl, whisk together the honey, apple cider vinegar, tomato paste, and coconut aminos until smooth.
Heat the avocado oil in a large non-stick skillet or wok over medium-high heat.
Add the chicken to the skillet and cook for 5-6 minutes, turning occasionally, until golden brown and crispy on all sides.
Remove the chicken from the pan and set aside on a clean plate.
Add the sliced red and green bell peppers along with the pineapple chunks to the same skillet, sautéing for 3-4 minutes until tender-crisp.
Return the chicken to the skillet and pour the prepared sauce over the mixture.
Stir constantly for 1-2 minutes until the sauce thickens into a glossy glaze that coats the chicken and vegetables.
Serve the crispy stir-fry immediately over the warm cooked white rice.