01 - Bring a large pot of salted water to a rolling boil. Add pasta and cook according to package directions until al dente. Reserve ½ cup of pasta water before draining. Set drained pasta aside.
02 - In a large skillet over medium heat, melt the butter. Add minced garlic and sauté for 1 minute until fragrant and lightly golden.
03 - Stir in Dijon mustard, smoked paprika, crushed red pepper flakes, Worcestershire sauce, lemon zest, and lemon juice. Cook for 1 to 2 minutes, stirring frequently to blend the flavors.
04 - Fold in chopped parsley, chives, kosher salt, and ground black pepper. Stir until evenly combined throughout the sauce.
05 - Add the cooked pasta to the skillet, tossing to coat evenly. Gradually add reserved pasta water, a splash at a time, until the sauce becomes glossy and clings to the noodles.
06 - If using shredded chicken or grilled steak, fold it into the pasta and cook for 2 additional minutes until warmed through.
07 - Plate immediately and garnish with extra fresh herbs, grated parmesan cheese, and lemon wedges as desired.