Soak wooden skewers in water for 20 minutes to prevent burning on the grill.
In a small bowl, whisk together coconut aminos, honey, rice vinegar, sesame oil, garlic powder, ground ginger, sea salt, and black pepper.
Cut the chicken breast into 1-inch cubes and place in a bowl with half of the prepared sauce to marinate.
Chop the pineapple, red bell pepper, and red onion into 1-inch pieces for uniform cooking.
Thread the chicken, pineapple, pepper, and onion onto the skewers in an alternating pattern.
Preheat a grill pan to medium-high heat and lightly brush with the avocado oil.
Grill skewers for 10-12 minutes, turning frequently and brushing with the remaining sauce until the chicken is cooked through.
Serve the skewers over the warm cooked brown rice for a complete, balanced meal.