In a small bowl, combine the tomatoes, garlic, and salt. Let chill in the fridge.
In a large skillet, heat the olive oil over medium heat. Cook the chicken breasts about 4-6 minutes per side until done. Place a slice of mozzarella on top of each chicken breast and cover to melt the cheese. Remove from heat.
Add a 1/2 tablespoon of basil pesto on top of each slice of cheese and add the tomato mixture on top. Drizzle with the balsamic glaze and sprinkle with Parmesan.
Notes
The chicken breasts should be thin. If they are thick (like the Costco frozen chicken breasts) slice them in half lengthwise. For this recipe, I use two Costco chicken breasts halved.