Pat the chicken breast dry with a paper towel, cut into bite-sized pieces, and toss in a bowl with arrowroot powder, sea salt, and black pepper until evenly coated.
In a small jar or bowl, whisk together the honey, tamari, toasted sesame oil, minced garlic, and grated fresh ginger to create the glaze.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the chicken to the skillet in a single layer and sear without moving for 3 minutes, then flip and cook for another 2-3 minutes until golden and crispy.
Toss in the broccoli florets and sliced red bell peppers, stir-frying for 3 to 4 minutes until the vegetables are tender-crisp and vibrant.
Pour the honey-garlic sauce over the chicken and vegetables, stirring constantly for 1 minute as the glaze thickens and coats every piece.
Remove from heat and serve immediately over a bed of warm cooked brown rice.