Soak four wooden skewers in water for at least 20 minutes to prevent them from burning on the grill.
In a small mixing bowl, whisk together the creamy peanut butter, coconut aminos, lime juice, honey, grated ginger, and minced garlic until the sauce is smooth and emulsified.
Cut the chicken breast into 1-inch cubes and place them in a bowl with half of the peanut sauce, tossing well to coat; let marinate for 15 minutes.
Prepare the vegetables by cutting the red bell pepper and red onion into 1-inch pieces suitable for skewering.
Thread the marinated chicken cubes, bell pepper, and red onion onto the soaked skewers in an alternating pattern.
Lightly brush the assembled skewers with avocado oil and season with sea salt and black pepper.
Preheat a grill pan or outdoor grill to medium-high heat and cook the skewers for 4-5 minutes per side, or until the chicken is cooked through and the vegetables are slightly charred.
Serve the skewers warm with the remaining half of the peanut sauce on the side for dipping.