If using wooden skewers, soak them in water for at least 20 minutes to prevent burning.

In a large bowl, combine the chicken pieces with olive oil, garlic powder, paprika, salt, and black pepper. Toss until evenly coated.

Thread the seasoned chicken onto the skewers, leaving a little space between pieces for even cooking.

In a small bowl, whisk together the mayonnaise, Thai sweet chili sauce, sriracha, honey, and lime juice until smooth. Set aside half of the sauce for serving.

Preheat a grill or grill pan to medium-high heat. Lightly oil the grates if needed.

Cook the skewers for 10 to 12 minutes, turning every 2 to 3 minutes, until the chicken is browned and reaches an internal temperature of 165 degrees F.

During the last 1 to 2 minutes of cooking, brush the skewers with some of the sauce, if desired, for extra flavor.

Transfer the skewers to a serving plate and drizzle with the reserved sauce. Garnish with cilantro, green onions, and sesame seeds if using.

Serve immediately.