Preheat the oven to 400°F (200°C). Lightly grease a 9x13 baking dish.
In a large bowl, whisk together the cornstarch, ground ginger, black pepper, and 1 teaspoon of the kosher salt.
Place the beaten eggs in a shallow bowl for dredging.
Heat 1/4 cup canola oil in a large skillet over medium-high heat until shimmering.
Working in batches, toss the chicken pieces in the cornstarch mixture to coat, then dip them into the beaten eggs.
Add the coated chicken to the hot skillet and cook until golden, about 2–3 minutes per side. Transfer cooked pieces to the prepared baking dish and repeat with remaining chicken.
In a small bowl, whisk together the honey, hot pepper sauce, rice vinegar, crushed red pepper (if using), and 1/2 teaspoon salt.
Pour the sauce over the cooked chicken in the baking dish and toss gently to coat all pieces evenly.
Bake in the preheated oven for 25–30 minutes, stirring once halfway through, until the sauce is bubbly and the chicken is cooked through.
Serve the firecracker chicken over rice and sprinkle with thinly sliced scallions and toasted sesame seeds.