01 - Pat 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 shimmering. Add chicken breasts and sear for 4 to 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 same 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 constantly until cheese melts completely and sauce becomes smooth and velvety.
05 - Stir in fresh parsley and dried thyme. Allow herbs to infuse into the sauce for 1 minute.
06 - Return chicken breasts along with any accumulated juices to the skillet. Simmer for 7 to 10 minutes, turning chicken occasionally, until cooked through and sauce has thickened to coat the back of a spoon.
07 - Taste sauce and adjust seasoning with additional salt and pepper if needed. Transfer chicken to serving plates, spoon sauce generously over top, and garnish with extra fresh parsley.