Pat the chicken dry and gently pound very thick pieces to an even thickness so they cook evenly.
Season both sides with salt, black pepper, and Italian seasoning.
Heat a large skillet over medium heat and add the olive oil.
Cook the chicken for 5–7 minutes per side until golden and the center reaches 165°F (74°C).
Place tomato slices over each chicken breast and warm for about 1 minute.
Top with fresh mozzarella slices.
Cover and cook for 1–2 minutes until the mozzarella softens and begins to melt.
Add fresh basil over the melted mozzarella.
Remove from heat and drizzle with balsamic glaze.
Transfer to plates and serve while the mozzarella is warm.