Cut the chicken breast into bite-sized pieces and pat thoroughly dry with paper towels.
In a small bowl, toss the chicken pieces with arrowroot powder, sea salt, and black pepper until each piece is evenly coated.
In a separate small jar or bowl, whisk together the orange juice, tamari, honey, minced ginger, and minced garlic to create the glaze.
Heat the avocado oil in a large skillet or wok over medium-high heat until it begins to shimmer.
Add the chicken to the skillet in a single layer and sear for 3-4 minutes per side until golden brown and crispy.
Add the broccoli florets and sliced red bell pepper to the pan, stir-frying for 3 minutes until the vegetables are tender-crisp and vibrant.
Pour the prepared orange glaze over the chicken and vegetables, stirring constantly as the sauce bubbles and thickens into a glossy coating.
Remove from heat once the chicken is cooked through and the sauce has reached a sticky, syrupy consistency.