In a small bowl, whisk together the mayonnaise, sweet chili sauce, Sriracha, and honey until smooth; set aside.
Place chicken pieces in a bowl with buttermilk and soak for 10 minutes.
In a separate shallow dish, combine cornstarch, salt, and black pepper.
Heat 2 inches of oil in a heavy-bottomed pot or deep fryer to 350°F (175°C).
Dredge chicken pieces in the cornstarch mixture, shaking off excess, then fry in batches for 3-4 minutes until golden brown and cooked through to 165°F.
Drain fried chicken on a wire rack or paper towels.
In a large bowl, toss the warm fried chicken with the prepared sauce until evenly coated.
Toast the slider buns under a broiler or in a pan until lightly browned.
Assemble sliders by placing a portion of cabbage slaw on the bottom bun, followed by the sauced chicken and a sprinkle of green onions.
Top with the remaining bun halves and serve immediately.