Step 1

In a small bowl, whisk together the balsamic vinegar, garlic powder, honey, oil, and Italian seasoning.

Step 2

Season the marinade with salt and pepper.

Step 3

Pour the marinade over the chicken and let the chicken marinate for at least 20 minutes. Preheat the grill to medium-high heat.

Step 4

Oil the grates.

Step 5

Grill the chicken until charred and cooked through at 165 degrees F, about 8 minutes per side.

Step 6

Top the chicken with the mozzarella, avocado, and tomato, and cover the grill until the cheese is melted, for about 2 minutes.

Step 7

Garnish the chicken with basil and drizzle with the balsamic glaze.

Step 8

Serve.