01 - Preheat oven to 400°F.
02 - Pat chicken breasts dry. Rub with olive oil, Italian seasoning, garlic powder, salt, and black pepper.
03 - Heat a large oven-safe skillet over medium-high heat. Sear chicken breasts for 2–3 minutes per side until golden.
04 - While chicken sears, combine tomatoes, red onion, garlic, basil, balsamic vinegar, olive oil, salt, and black pepper in a bowl to make the bruschetta topping.
05 - Top each chicken breast with a generous spoonful of bruschetta mixture and slices of mozzarella.
06 - Transfer skillet to oven and bake for 15–18 minutes, or until chicken reaches an internal temperature of 165°F and cheese is melted.
07 - Remove from oven, let rest for 5 minutes. Garnish with extra basil and a drizzle of balsamic glaze if desired.
08 - Serve immediately with a fresh salad or roasted vegetables.