01 - Pat the chicken breasts dry with paper towels. Season both sides generously with salt and black pepper, pressing the seasoning into the meat.
02 - Heat olive oil and butter in a large skillet over medium-high heat until butter foams. Add chicken breasts and sear for 4–5 minutes per side until golden brown and nearly cooked through. Transfer chicken to a plate and set aside.
03 - Reduce heat to medium. Add minced garlic to the rendered fat in the skillet and sauté for 30 seconds until fragrant, being careful not to burn.
04 - Add Boursin cheese, chicken broth, and heavy cream to the skillet. Stir continuously with a wooden spoon until the cheese melts completely and the sauce becomes smooth and velvety.
05 - Stir in fresh parsley and dried thyme. Allow the herbs to infuse into the sauce for 1 minute.
06 - Return chicken breasts to the skillet along with any accumulated juices. Simmer for 7–10 minutes, turning chicken occasionally, until cooked through (165°F internal temperature) and sauce has thickened to coat the back of a spoon.
07 - Taste the sauce and add additional salt or pepper if needed. Transfer chicken and sauce to a serving platter.
08 - Sprinkle additional fresh parsley over the top as garnish. Serve immediately while hot.