Add the honey, soy sauce, orange juice and zest, sriracha, garlic powder, red pepper flakes, ginger powder, and salt to a bowl. Whisk well and set aside.
Heat about 3 inches of oil in a Dutch oven to 375°F.
Add cornstarch to a shallow bowl. Dredge chicken in the flour, shake off excess, and fry for 4-5 minutes. Drain on a rack on top of a baking sheet.
Pour the sauce mixture into a large nonstick skillet over medium high heat. Let the mixture come to a simmer and let cook for 1 – 2 minutes, until thickened.
Add the chicken to the sauce and toss to coat.
To build the sandwiches, place parsley leaves in the buns, then top with 3 – 4 chicken pieces, sprinkle with sesame seeds and scallions. Top with a squeeze of Kewpie.