Pat the chicken breast dry and cut into 1-inch cubes.
In a medium bowl, toss the chicken with arrowroot powder, sea salt, and black pepper until evenly coated.
In a small jar, whisk together the coconut aminos, rice vinegar, honey, toasted sesame oil, grated ginger, and minced garlic.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the chicken to the hot pan in a single layer and sear for 3-4 minutes per side until golden brown and crispy.
Remove the chicken from the pan and set aside.
Add the bell peppers and sugar snap peas to the same pan, sautéing for 3 minutes until tender-crisp.
Stir in the pineapple chunks and cook for another minute.
Return the chicken to the pan and pour the sauce over the mixture.
Toss everything together for 1-2 minutes until the sauce thickens and coats the crispy chicken and vegetables beautifully.