In a large mixing bowl, combine the olive oil, garlic powder, smoked paprika, onion powder, salt, black pepper, and red pepper flakes to form a uniform marinade.
Add the chicken cubes to the marinade and toss until thoroughly coated. Cover and marinate in the refrigerator for at least 30 minutes.
In a small mixing bowl, whisk together the creamy peanut butter, honey, soy sauce, lime juice, and Sriracha until smooth. Set aside.
Preheat the grill or grill pan to medium-high heat.
Thread the marinated chicken cubes onto soaked bamboo skewers, packing them closely but not too tight.
Grill the skewers for approximately 10-12 minutes, turning occasionally, until the chicken reaches an internal temperature of 165°F (75°C).
Remove the skewers from the heat and brush generously with the Bang Bang sauce, saving some for serving.
Sprinkle freshly chopped cilantro over the skewers and serve with the reserved Bang Bang sauce.
Notes
Serve on a rustic wooden board with extra lime wedges.