Preheat oven to 400° and line a baking sheet with parchment.
Set up a dredging station with one bowl of flour, one of eggs, and one of panko. Dredge the chicken in flour, then coat in eggs and cover in panko. Season generously with salt and pepper.
Arrange chicken on parchment-lined baking sheet and bake until no longer pink, 18 to 20 minutes.
Meanwhile, make sauce: In a small saucepan over medium heat, combine orange juice, soy sauce, honey, garlic, ginger, and cornstarch. Whisk until combined and cook until thickened, about 5 minutes.
Transfer chicken to a large bowl and toss in orange sauce.
Serve over rice with orange zest, sesame seeds, and green onions.