Making Easy Sweet and Sour Chicken is straightforward if you follow these simple steps:

1. Prepare the Chicken: Season the chicken pieces with salt and pepper. This will enhance the flavor during cooking.
2. Heat the Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat.
3. Cook the Chicken: Add the seasoned chicken to the hot skillet. Stir-fry for about 5-7 minutes until it is golden brown and cooked through. Remove from the skillet and set aside.
4. Sauté the Vegetables: In the same skillet, add the chopped onions and bell peppers. Cook for 3-4 minutes until slightly tender but still crisp.
5. Make the Sauce: In a bowl, combine sugar, vinegar, soy sauce, and ketchup. Stir well until the sugar is dissolved. Pour this sauce over the sautéed vegetables.
6. Add Pineapple: Toss in the pineapple chunks and stir to combine. Let it simmer for a few minutes.
7. Thicken the Sauce: Mix the cornstarch and water, then slowly add it to the skillet. Stir continuously until the sauce thickens, about 1-2 minutes.
8. Combine Chicken and Sauce: Add the cooked chicken back to the skillet and mix everything thoroughly so that the chicken is coated in the sauce.
9. Serve: Once heated through, remove from heat, and it’s ready to enjoy!

By following these simple steps, you will create a vibrant and delicious Easy Sweet and Sour Chicken that is sure to impress.