Place the chicken breasts in the crockpot and season both sides with salt, pepper, garlic powder, oregano, and red pepper flakes.
Scatter the minced garlic and chopped sun-dried tomatoes over the top of the chicken.
Pour the chicken bone broth into the slow cooker around the base of the chicken.
Cover and cook on high for 3-4 hours or on low for 6-7 hours until the chicken reaches an internal temperature of 165°F.
Remove the chicken from the crockpot and let rest on a cutting board for 5 minutes before slicing or shredding.
While the chicken rests, whisk the Greek yogurt and grated parmesan cheese into the remaining liquid in the crockpot until a smooth sauce forms.
Add the chicken back into the crockpot and toss to coat thoroughly with the cream sauce.
Garnish with fresh basil and serve over high-protein pasta, quinoa, or cauliflower rice.