Cut the chicken breast, red bell pepper, zucchini, and red onion into uniform 1-inch chunks.
In a small bowl, whisk together the peanut butter, coconut aminos, sesame oil, lime juice, garlic powder, and ground ginger until smooth.
Thread the chicken and vegetable chunks onto skewers, alternating between meat and produce, then season with sea salt and black pepper.
Heat a grill pan or outdoor grill over medium-high heat and cook the skewers for 8-10 minutes, turning occasionally, until the chicken is cooked through.
While the skewers cook, lightly sauté the cauliflower rice in a non-stick pan for 3-5 minutes until tender.
Place the cauliflower rice on a plate, top with the skewers, and drizzle the peanut sauce over everything before serving.