In a small bowl, prepare bruschetta topping by mixing together tomatoes, onion, garlic, olive oil, balsamic vinegar, salt, and pepper. If you're not planning to cook the chicken right away, wait to add the basil and Parmesan until right before serving. Otherwise, add them now.
Prepare chicken by sprinkling both sides with oregano, garlic powder, salt and pepper.
Heat an oven-safe grill pan or a frying pan over medium-high heat. Once hot, add chicken and cook for 5-7 minutes on each side or until golden brown.
Carefully put the pan into preheated oven and bake for 5-10 minutes or until chicken reaches an internal temperature of 165°F.
Serve topped with bruschetta mixture (don't forget to add basil and Parmesan if you haven't yet!).
Video
Notes
Pump up the flavor: Try marinating it in balsamic marinade for 2 to 24 hours before cooking.
No grill pan? No problem, you can make this in any oven-safe skillet or frying pan.
Take it outside: This is fantastic grilled on any type of grill!
To make dairy-free: Just leave out the Parmesan cheese!
To make Whole30 compliant and Paleo: Again, just leave out the cheese.
Make it extra cheesy: Try adding small pieces of fresh mozzarella cheese instead of or in addition to the Parmesan cheese.
Want to use chicken thighs? GO FOR IT. This topping is also tasty on pork chops or fish.
Don't like raw onions? You have a couple of options here. First, keep in mind that while they sit and mingle with the olive oil and vinegar, they do lose their bite a little and become much more mild. You can also soak them in ice water for 10 minutes before adding them. This takes out some of their bite. Or you could leave them out.