Crank up your oven to 375 degrees F. While that's heating up, give your chicken breasts a good rinse and pat them dry with some paper towels.

Make some shallow cuts in the chicken, kind of like you're making a criss-cross pattern. But don't cut all the way through. We just want to make some little pockets for flavor.

Next, pop the chicken breasts into a baking dish. Sprinkle on some salt, pepper, Italian seasoning, onion powder, and garlic powder. And to finish it off, drizzle a little bit of olive oil over everything.

Now for the sauce. Grab a mixing bowl and toss in your chopped tomatoes, minced garlic, chopped red onion, oregano, and a pinch of salt and pepper. Give it a good stir to get everything mixed together nicely.

Once the sauce is well combined, pour it over the chicken in the baking dish. Make sure the chicken is covered evenly.

Then, sprinkle a generous amount of shredded mozzarella cheese over the chicken and sauce.

Now, we’re ready to bake. Slide that dish into the preheated oven and let it cook for about 25-30 minutes. Keep an eye on it towards the end, and when the chicken is cooked through and the cheese is melted and bubbly, turn on the broiler for a few minutes to get that cheese nice and golden brown.

Finally, once it's out of the oven, sprinkle some fresh basil leaves over the top for a final touch of flavor and color. And there you have it! Your delicious chicken mozzarella bake is ready to enjoy.