Add the chicken to a medium bowl. Top with the soy sauce, honey, and baking soda. Let sit 15 minutes, or refrigerate for up to 1 day.
Meanwhile, prepare the orange sauce: In a small saucepan, whisk together the orange zest (I recommend zesting directly into the pan so you catch the flavorful oils), orange juice, honey, soy sauce, ginger, and garlic. In a small bowl, whisk together the water and cornstarch to create a smooth slurry. Stir into the orange mixture. Bring the mixture to a simmer and cook, stirring constantly, until the sauce is thickened and reduced, about 2 minutes. Stir in the red pepper flakes. Removed from the heat and set aside.
Sauté the chicken. In a wok or large skillet, heat the canola oil over medium-high heat. Sprinkle the 3 tablespoons cornstarch over the top of the chicken. Stir to evenly coat, using a spoon to separate the pieces and ensure each is nicely coated.
Once the oil is hot and shimmering, add the chicken to the pan in an even layer, a few pieces at a time (discard any remaining marinade). If any of the pieces are stuck together, use a spoon to break them back apart. Cook the orange chicken on the first side until golden brown, about 2 minutes. With tongs, flip and cook on the remaining sides, stirring periodically, until the chicken is deeply golden brown on all sides and completely cooked through, about 2 to 3 minutes more.
Reduce the heat to low and pour in the orange sauce. Stir to coat the chicken evenly. The sauce will loosen up a tiny bit as you stir, then coat the chicken to make it deliciously sticky. Stir in the green onions. Serve hot with rice.
Notes
If you’d like to serve with sautéed veggies: Remove the cooked chicken to a plate after Step 4. Saute your vegetables of choice in 1 tablespoon oil with a few dashes of soy sauce until crisp-tender. Add the chicken back to the skillet and proceed to Step 5.
TO STORE: Refrigerate leftover orange chicken in an airtight storage container for up to 3 days.
TO REHEAT: Reheat orange chicken in a skillet set over medium heat or in the microwave.
TO FREEZE: Freeze orange chicken in an airtight container or freezer bag for up to 3 months. Let it thaw in the refrigerator, then reheat according to the instructions above.