Preheat oven to 400°F. If chicken breasts are thick, slice horizontally and pound to 1/2-inch thickness. Pat dry and season both sides with Italian seasoning, salt, and pepper.
Heat 1 tablespoon olive oil in large oven-safe skillet over medium-high heat. Add chicken and sear 3-4 minutes per side until golden brown. Remove to plate.
Add remaining 1 tablespoon olive oil and minced garlic to skillet. Cook 30 seconds until fragrant. Add balsamic vinegar and honey, scraping up browned bits.
Return chicken to skillet. Top each breast with fresh mozzarella slice and tomato slice. Arrange remaining tomatoes around chicken.
Bake 8-10 minutes until cheese melts and chicken reaches 165°F. Broil 1-2 minutes for extra browning if desired.
Garnish with fresh basil and drizzle with balsamic glaze. Serve immediately.