Sprinkle salt and black pepper all over chicken pieces so they taste really good.
Heat 2 tablespoons butter in big skillet on medium-high heat for about 2 minutes until melted.
Add chicken to hot skillet and cook 6 to 7 minutes until golden and cooked through.
Take cooked chicken out of skillet and put it on a plate while you make sauce.
Bring big pot of salted water to boil, then add pasta and cook 9 to 11 minutes.
Drain cooked pasta but save 1 cup of that starchy water for adjusting sauce later.
Melt 6 tablespoons butter in same skillet on medium heat for about 1 minute until bubbling.
Add garlic, paprika, and cayenne to butter, stirring for 1 minute until it smells amazing.
Pour heavy cream and lemon juice into skillet, whisking everything into a smooth creamy sauce.
Stir in parsley and chives, then simmer sauce 3 to 4 minutes until it gets thicker.
Put cooked chicken back in skillet with drained pasta, tossing everything together until well coated.
Add saved pasta water little by little if you need more sauce to coat everything nicely.
Taste it and add more salt, pepper, or cayenne based on what you like best.
Serve hot right away, adding extra fresh herbs, grated parmesan, and red pepper flakes if you want..