01 - Season chicken breasts on both sides with kosher salt and black pepper, ensuring even coverage.
02 - Heat olive oil in skillet over medium heat. Sear chicken for 2-3 minutes per side until lightly golden. This step enhances flavor but is optional.
03 - Transfer seared chicken breasts to slow cooker, arranging in single layer.
04 - Whisk together garlic, oregano, thyme, red pepper flakes, sun-dried tomatoes, chicken broth, and heavy cream until well combined.
05 - Pour cream mixture over chicken. Sprinkle Parmesan cheese evenly across the top.
06 - Cover and cook on low heat for 3-4 hours until chicken reaches internal temperature of 165°F and is tender.
07 - Remove chicken from slow cooker. Stir sauce to combine, then return chicken to coat thoroughly.
08 - Top with fresh basil slices and additional black pepper. Serve immediately with pasta, mashed potatoes, or steamed vegetables.