01 - Season the chicken breasts with salt, pepper, and Italian seasoning on both sides, ensuring even coverage.
02 - Heat olive oil and butter in a large skillet over medium-high heat. Add chicken breasts and cook for 5–7 minutes per side, until golden brown and cooked through. Remove the chicken and set aside.
03 - In the same skillet, reduce heat to medium. Add onion and garlic; sauté for 2–3 minutes until fragrant and translucent.
04 - Pour in the chicken broth, scraping up any browned bits from the pan. Let it simmer for 2 minutes to concentrate flavors.
05 - Stir in the heavy cream and Parmesan cheese, whisking until the sauce is smooth. Simmer gently for another 2–3 minutes until slightly thickened.
06 - Return the chicken to the skillet, coating it in the sauce. Simmer for 3–5 minutes, allowing the flavors to meld together.
07 - Sprinkle with fresh parsley and additional Parmesan, if desired. Serve immediately with your choice of sides.