Preheat your oven to 200°C (390°F).
Use a sharp paring knife to carefully slice each chicken breast horizontally, creating a pocket without cutting all the way through.
Mix the softened cream cheese, chopped herbs, roasted garlic, lemon zest, and chopped sun-dried tomatoes in a bowl until well combined.
Stuff each chicken breast generously with the cheese mixture, pressing gently to pack the filling inside.
Secure each stuffed breast with toothpicks to keep the filling in during searing and baking.
Heat a skillet over medium-high heat, add olive oil, and sear the stuffed chicken breasts for about 3-4 minutes per side, until golden brown and crispy.
Transfer the skillet to the preheated oven and bake for 20-25 minutes, or until the internal temperature reaches 75°C (165°F).
Remove the chicken from the oven and let it rest for 5 minutes, allowing the juices to redistribute.
Remove the toothpicks carefully, then slice the chicken to reveal the melted cheese and colorful stuffing inside.
Serve the stuffed chicken breasts hot, paired with a fresh salad or roasted vegetables for a complete meal.