Combine mayonnaise, sweet chili sauce, Sriracha, and honey in a bowl; whisk until the emulsion is homogenous and set aside.
In a large mixing bowl, dredge chicken cubes in cornstarch, salt, and pepper until each piece is isolated and fully coated.
Heat vegetable oil in a heavy-bottomed skillet to 175°C (350°F).
Fry the chicken in batches to maintain oil temperature, cooking for approximately 3-4 minutes per side until the exterior is golden-brown and the internal temperature reaches 74°C (165°F).
Transfer the cooked chicken to a wire rack or paper towels to drain excess lipid.
In a clean bowl, toss the warm chicken with 50% of the prepared sauce until evenly glazed.
Apportion 150g of cooked rice into each of the four serving bowls.
Arrange the glazed chicken, shredded carrots, and sliced cucumbers atop the rice base.
Drizzle the remaining sauce over the components and garnish with green onions and sesame seeds.