Preheat the grill to medium-high heat.
Season the chicken breasts with olive oil, garlic powder, salt, and pepper.
Grill the chicken for 6-7 minutes on each side or until fully cooked.
During the last 2 minutes of grilling, place mozzarella slices on top of the chicken.
Close the grill lid to melt the cheese.
Remove chicken from the grill and let it rest for a few minutes.
Arrange halved cherry tomatoes and fresh basil over the chicken.
Drizzle balsamic glaze on top for added flavor.
Serve immediately while warm.
Enjoy with a side salad or your favorite vegetables.