Cut the chicken breast into bite-sized cubes and place them in a small bowl.
Toss the chicken with arrowroot powder, sea salt, and black pepper until evenly coated.
Heat the sesame 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 cooked through.
Remove the chicken from the pan and set aside.
In the same skillet, add the sliced bell peppers, snap peas, and pineapple chunks, sautéing for 3-4 minutes until the vegetables are tender-crisp.
Stir in the minced garlic and grated ginger, cooking for 30 seconds until fragrant.
In a small jar, whisk together the tamari, rice vinegar, and honey to create the sauce.
Add the chicken back into the skillet and pour the sauce over the mixture, tossing for 1 minute until the sauce thickens and coats everything beautifully.
Serve the hot stir-fry over a half-cup of fluffy cooked brown rice.