Start by grabbing a bowl and whisking the cornstarch with cold water. This is your thickening base. Then, pour in chicken broth, soy sauce, honey, sesame oil, and red pepper flakes. Mix well until it’s all combined and smooth. Set aside—this sauce will tie everything together later.
Heat one tablespoon of olive oil in a large skillet or wok over medium-high heat. Add the cubed chicken in a single layer (do it in batches if needed). Season with salt and pepper, then cook for 3 to 5 minutes, stirring occasionally, until it’s golden and fully cooked through. Remove from skillet and set aside.
Lower the heat to medium and pour the remaining oil into the pan. Toss in the broccoli, carrots, and bell peppers. Stir fry for about 3 to 4 minutes until they’re just tender but still vibrant. Add garlic and ginger next—let them cook for 1 minute until fragrant.
Return the cooked chicken to the skillet. Give your sauce a quick whisk (it may have settled) and pour it over the chicken and veggies. Stir gently to combine all the goodness together.
Let the whole mixture come to a boil. Stir it gently and let it simmer for about a minute—this activates the cornstarch and thickens the sauce. Once thickened, remove from heat. Serve hot with rice, noodles, or even in lettuce wraps!