01 - Pat the chicken breasts dry with paper towels. Season both sides generously with kosher salt, freshly ground black pepper, and paprika, pressing the spices into the meat to adhere.
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 same skillet and sauté for 30 seconds until fragrant, being careful not to burn it.
04 - Pour in chicken broth and use a wooden spoon to scrape up any browned bits from the bottom of the skillet. Let the broth simmer for 2 minutes to reduce slightly.
05 - Stir in heavy cream, Parmesan cheese, and Italian seasoning. Simmer for 3–4 minutes, stirring frequently, until cheese is completely melted and sauce has thickened enough to coat the back of a spoon.
06 - Add fresh baby spinach to the sauce and cook for 1–2 minutes, stirring gently, until spinach is completely wilted and incorporated.
07 - Return chicken breasts to the skillet, spooning sauce over the top. Simmer for another 3–5 minutes until chicken is fully cooked through (internal temperature reaches 165°F). Garnish with chopped parsley if desired and serve hot.