Season Chicken Pieces:
Dry chicken pieces with paper towels and season both sides well with salt and pepper.Whisk Cream Mixture:
In a medium bowl, combine chicken broth, heavy cream, Parmesan, garlic, oregano, thyme, and red pepper flakes; whisk until smooth.Arrange Chicken in Slow Cooker:
Arrange seasoned chicken breasts in a single layer at the bottom of the slow cooker.Pour Cream Mixture Over Chicken:
Evenly pour the cream mixture over the chicken.Top with Sun-Dried Tomatoes:
Distribute chopped sun-dried tomatoes on top.Cook on Low or High:
Cover and cook on LOW for 4–5 hours or on HIGH for 2–3 hours.Stir in Butter:
About 30 minutes before serving, stir in the butter to thicken and enrich the sauce.Garnish with Fresh Herbs:
Once cooking is complete, garnish with fresh basil or parsley.Serve Hot:
Serve hot alongside rice, mashed potatoes, pasta, or crusty bread.