In a large skillet, heat the olive oil over medium-high heat. Season the chicken breasts with salt, pepper, and garlic powder.
Add the chicken to the skillet and sear for about 6-7 minutes on each side, or until the chicken is golden brown and cooked through. Remove the chicken from the skillet and set aside.
In the same skillet, add the minced garlic and sauté for about 30 seconds, until fragrant.
Pour in the chicken broth, scraping up any browned bits from the bottom of the skillet. Bring to a simmer.
Reduce the heat to medium-low, then stir in the heavy cream, lemon zest, lemon juice, and dried thyme. Let the sauce simmer for 2-3 minutes until it thickens slightly.
Return the chicken to the skillet, coating it well with the creamy lemon garlic sauce. Simmer for an additional 2-3 minutes until heated through.
Serve the chicken garnished with fresh parsley and extra lemon wedges, if desired.