Preheat the oven to 450 degrees F (230 degrees C). Spray a baking sheet with nonstick cooking spray.
Combine chicken, pork, bread crumbs, egg, egg, sriracha sauce, garlic powder, chives, salt, and pepper in a large bowl. Mix until evenly combined. Form into 20 meatballs and place on the baking sheet.
Bake in the preheated oven for 8 minutes. Flip and cook until no longer pink in the centers, about 6 minutes more.
In the meantime, make the sauce. Whisk mayonnaise, sweet chili sauce, sriracha sauce, and rice vinegar together in a large bowl. Remove meatballs from oven and let cool for 2 minutes.
Gently toss meatballs with the sauce. Arrange on a serving plate and garnish with carrot and cilantro. Stick a toothpick into each meatball.