Heat the oil in a large skillet over medium heat.
Add the chicken pieces and sprinkle with onion and garlic powder. Sauté until browned and cooked through, about 7-10 minutes.
Pour in the Korma Sauce and stir well to coat the chicken.
Let the mixture simmer on low heat for about 5 minutes.
Prepare the cooked rice according to package instructions.
If using, add the cherry tomatoes to the skillet and stir gently.
Serve the chicken korma over the rice and garnish with cilantro. Season with salt and pepper to taste.