Pat the chicken breast dry with a paper towel and toss in a bowl with arrowroot powder, sea salt, and black pepper until evenly coated.
In a small glass jar, whisk together the orange juice, tamari, honey, minced ginger, minced garlic, and toasted sesame oil until well combined.
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 cook for 5-6 minutes, turning occasionally, until the edges are golden and crispy.
Toss in the broccoli florets, sliced red bell pepper, and sugar snap peas with a tablespoon of water, covering for 2 minutes to steam-fry.
Remove the lid and pour the orange sauce over the chicken and vegetables, stirring constantly for 1-2 minutes until the sauce thickens into a glossy glaze.
Serve the stir-fry immediately over a bed of warm cauliflower rice for a complete, clean-eating meal.