01 - Pat the chicken breasts dry with paper towels. Season both sides evenly with salt, black pepper, and garlic powder.
02 - Heat olive oil in a large skillet over medium-high heat. Sear the chicken breasts for 4 to 5 minutes per side until a golden crust forms. The chicken does not need to be fully cooked at this stage. Remove from the skillet and set aside on a plate.
03 - In the same skillet, add the minced garlic and chopped sun-dried tomatoes. Sauté for 1 to 2 minutes until fragrant, scraping up any browned bits from the bottom of the pan.
04 - Reduce the heat to medium. Pour in the heavy cream and chicken broth, stirring continuously to deglaze the pan and combine all the flavors.
05 - Stir in the basil pesto and grated Parmesan cheese until the sauce is completely smooth and well blended. Bring to a gentle simmer.
06 - Return the seared chicken breasts to the skillet. Spoon the sauce over each piece to coat evenly. Cover with a lid, reduce the heat to low, and simmer for 10 to 12 minutes until the chicken is cooked through to an internal temperature of 165°F and the sauce has thickened.
07 - Transfer the chicken to serving plates and spoon the creamy pesto sauce generously over each portion. Garnish with torn fresh basil leaves and additional Parmesan cheese.