Boil linguine according to package instructions. Drain and set aside.
Season chicken with salt, pepper, and garlic powder. Heat olive oil in a large skillet over medium-high heat. Sear chicken strips 3–4 minutes per side until golden and cooked through. Remove from skillet and set aside.
In the same skillet, melt butter. Add minced garlic, smoked paprika, chili flakes, and Italian herbs. Cook 30 seconds until fragrant.
Pour in heavy cream, stirring constantly. Add Parmesan cheese and cook 2–3 minutes until the sauce thickens and is smooth. Squeeze in lemon juice for a bright finish.
Return chicken to the skillet. Add cooked linguine and toss gently until pasta and chicken are fully coated in the creamy cowboy butter sauce.
Garnish with chopped parsley and additional Parmesan if desired. Serve hot with a side salad or garlic bread.
