Prep the chicken: Toss chicken tenders with olive oil, Italian seasoning, garlic powder, paprika, salt, and pepper. Let marinate for 15–20 minutes.
Make the bruschetta: In a bowl, combine tomatoes, garlic, basil, balsamic vinegar, and olive oil. Season with salt and pepper. Set aside.
Grill the chicken: Preheat grill (or grill pan) to medium-high. Grill tenders for 3–4 minutes per side until golden and just cooked through. In the last minute of cooking, top each tender with a piece of fresh mozzarella. Cover briefly to help it melt.
Finish and serve: Arrange the tenders on a serving platter, spoon the fresh bruschetta mixture over the top, and drizzle with balsamic glaze if desired. Garnish with extra basil.