Cut the chicken breast into bite-sized pieces and toss in a bowl 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 pan and sear for 5-6 minutes, turning occasionally, until the edges are golden and crispy.
Add the broccoli florets and sliced red bell pepper to the pan, sautéing for another 3-4 minutes until the vegetables are tender-crisp.
In a small jar, whisk together the minced garlic, grated ginger, honey, and tamari.
Pour the sauce over the chicken and vegetables, stirring constantly for 1-2 minutes until the glaze thickens and coats everything beautifully.
Serve the stir-fry immediately over a bed of warm, cooked brown rice.