Start by heating oil in a large skillet over medium-high heat. Once hot, add your chicken chunks. Stir them gently to coat with the oil, then let them sit for a couple of minutes to brown on one side. Don’t overcrowd the pan—browning gives the chicken that yummy texture.
While the chicken is browning, combine orange juice, soy sauce, brown sugar, water, cornstarch, and pepper in a bowl. Use a whisk or fork to stir until the cornstarch is fully dissolved. This step makes sure the sauce thickens smoothly without lumps.
Once your chicken is browned, pour the sauce over it. Give it a quick stir so the chicken is coated. When the sauce begins to bubble, reduce the heat to a simmer. Let everything cook together for about 10 minutes. The sauce will thicken into a beautiful glaze and the chicken will be cooked through.
Turn off the heat and serve hot. Sprinkle sesame seeds or sliced green onions on top for a nice crunch and visual appeal. Trust me—presentation makes it even more enjoyable!