Cook spaghetti according to package directions. , Meanwhile, in a small microwave-safe bowl, microwave peanut butter on high for 30 seconds or until melted. Whisk, in the water, honey, soy sauce, lime juice, pepper sauce and garlic. Add the oil in a steady stream, whisking constantly., Drain spaghetti and rinse in cold water. Transfer to a large bowl. Pour dressing over pasta; toss to coat. Add the spinach, chicken, carrots, onions and peanuts. Toss to coat. Sprinkle with cilantro.