Begin by seasoning the chicken breasts with salt and pepper on both sides.
In a large skillet, heat the olive oil over medium-high heat. Once hot, add the seasoned chicken breasts and sear for about 5-6 minutes on each side until they are golden brown and cooked through. Remove them from the skillet and set aside.
In the same skillet, add the sliced mushrooms and cook for about 4-5 minutes until they are softened and beginning to brown.
Add the minced garlic, thyme, and rosemary to the mushrooms, stirring to combine. Sauté for an additional 1-2 minutes until the garlic is fragrant.
Pour in the chicken broth, scraping up any brown bits from the bottom of the skillet. This will add wonderful flavor to the dish.
Stir in the heavy cream and let it simmer for about 3 minutes until the sauce thickens a little.
Return the chicken breasts to the skillet, spooning the mushroom sauce over them. Let everything simmer together for another 2-3 minutes to meld the flavors.
Taste and adjust seasoning with more salt and pepper if necessary.
Garnish with fresh parsley before serving.
Notes
Serve with rice or steamed vegetables for a complete meal.