01 - Toss chicken pieces with cornstarch, salt, and pepper in a large bowl until evenly coated.
02 - Heat vegetable oil in a large skillet over medium-high heat. Add chicken and cook for 6-8 minutes, turning to brown all sides, until cooked through. Remove chicken and set aside.
03 - In the same skillet, combine soy sauce, honey, rice vinegar, brown sugar, garlic, ginger, sriracha if using, and sesame oil. Bring to a simmer over medium heat, stirring frequently.
04 - Return the chicken to the skillet and toss to coat in the sauce. Simmer for 3-4 minutes until the sauce thickens and glazes the chicken.
05 - Divide cooked rice among four bowls. Top each with sticky chicken, carrots, cucumber, green onions, sesame seeds, and cilantro.
06 - Serve immediately.