Add the butter and seasonings to a nonstick saucepan: Melt the butter, and add the salt, pepper, oregano, Tyme, garlic powder, and smoked paprika. Stir until well combined.
Season the Chicken: Add the chicken to a baking dish, and Season both sides of the chicken breasts with the butter mixture.
Sear the Chicken: Heat olive oil, and 2 tbsp of butter in a large skillet over medium-high heat. Add the chicken breasts and cook for about 4-5 minutes on each side, or until they are golden brown and cooked through. Remove the chicken from the skillet and set it aside.
Make the Sauce: In the same skillet, add 1 tbsp of butter, and add in the diced onions, the minced garlic, Sauté for about a minute until fragrant. Next add in the spinach, and the sundried tomatoes.
Deglaze the Pan: Pour in the chicken broth to deglaze the pan, scraping up any browned bits from the bottom. Allow it to simmer for a few minutes until the liquid has reduced by half.
Add Cream and Cheese: Reduce the heat to low, then add the heavy cream and grated Parmesan cheese. Add in the Italian seasoning, smoked paprika, and the red chili flakes. Stir the sauce until the cheese has melted and the sauce thickens slightly, about 2-3 minutes.
Return the Chicken: Place the seared chicken breasts back into the skillet, nestling them into the sauce.
Simmer: Simmer the chicken in the sauce for an additional 15-20 minutes, or until the chicken is heated through and the sauce has thickened to your desired consistency.
Garnish: Sprinkle the chopped fresh parsley or basil over the top of the chicken and sauce.
Serve: Serve the "Marry Me Chicken" hot, either as-is or over, fresh vegetables. Or over cauliflower rice, mashed cauliflower potatoes, or with miracle noodles depending on your preference.