Pat the chicken dry and season with salt, black pepper, paprika, and garlic powder. Dredge lightly in flour.
Melt butter in a skillet over medium heat. Sear chicken thighs skin-side down until golden brown on both sides, about 4-5 minutes per side. Remove and set aside.
In the same skillet, sauté chopped onion until translucent, then add minced garlic and cook for 30 seconds.
Sprinkle in 2 tablespoons of flour and cook for one minute. Gradually whisk in chicken broth until smooth, then add heavy cream and simmer until thickened.
Return the seared chicken to the pan with the gravy, cover, and simmer on low heat for 25-30 minutes.
Cook white rice according to package directions.
Serve chicken and gravy over rice, garnished with fresh parsley.