I started by cutting the chicken into bite-sized pieces, slicing the onion, and dicing the bell peppers. I also minced fresh garlic. Having everything ready before cooking really saved me from rushing later.
Next, I mixed the chicken with 1 tbsp soy sauce, 1 tsp black pepper, and cornstarch. I let it sit for about 10 minutes. This simple step made the chicken extra tender and flavorful.
In a small bowl, I whisked together 2 tbsp soy sauce, oyster sauce, 1 tsp black pepper, and 2 tbsp water. This sauce was the perfect balance of salty, savory, and peppery.
I heated oil in my wok, tossed in the garlic, and let it sizzle until fragrant. Then I added the marinated chicken, cooking it until golden brown and fully cooked through. The smell at this point was amazing.
Once the chicken was done, I threw in the onions and bell peppers for crunch. After a quick stir, I poured the sauce over everything. Watching the glossy pepper sauce coat each piece of chicken was so satisfying.
I let it all cook together for 2–3 minutes until the sauce thickened beautifully. I turned off the heat and served it hot with some steamed rice on the side.