In a large skillet, heat olive oil over medium heat. Once shimmering, it’s time to add the diced onion and red bell pepper. Sauté these vegetables for about 4 to 5 minutes until they soften and become fragrant. The goal is to achieve a nice golden-brown color on the edges, enhancing their natural sweetness.
While the vegetables are cooking, take your chicken and cut it into bite-sized pieces. Sprinkle the pieces with salt and pepper to taste. This seasoning will penetrate the meat, adding flavor in every bite.
Once the vegetables have softened, add the seasoned chicken into the hot skillet. Cook thoroughly, stirring occasionally, until the chicken is browned and cooked all the way through. Aim for about 6 to 8 minutes, and be sure the meat is no longer pink.
In a small bowl, whisk together the hoisin sauce, soy sauce, granulated sugar, corn starch, Worcestershire sauce, sesame oil, and cold water. This mixture is the heart of your sauce and will bring everything together beautifully.
Pour the sauce mixture into the hot pan with the cooked chicken and vegetables. Stir to combine, scraping up any browned bits from the bottom of the pan. This adds even more flavor to your dish!
Add in the red dried chiles according to your heat preference. Let the mixture simmer for a few minutes. Watch as the sauce thickens and coats all the ingredients evenly, creating a glossy finish.
Before serving, toss in the sliced scallions and roasted peanuts. This step brings freshness and crunch to your dish. Give everything a good stir to ensure even distribution.
Remove the skillet from the heat and let it rest for a couple of minutes. This will allow the flavors to meld even more.
Serve your Kung Pao Chicken over fluffy white rice, making sure to drizzle some extra sauce from the skillet over the top for added flavor. Enjoy!