In a medium size bowl, mix the tomato, garlic, shallot, basil, and half of each the salt, pepper, and 1 tbsp of the olive oil. Taste for seasoning and set aside.
Season the chicken with salt and pepper on both sides. Heat the remaining 1 tbsp of olive oil in a large skillet. Add chicken to the skillet and cook for about 3 to 4 min per side until browned. When chicken is cooked, top each piece with a slice of mozzarella cheese. Cover with a lid and allow to melt. Remove from heat.
Top each chicken breast with bruschetta and drizzle with balsamic glaze.
