Cook the linguine according to package instructions. Drain and set aside.
In a large skillet, heat olive oil over medium-high heat.
Season chicken strips with salt and pepper. Add to the skillet and cook until golden brown and cooked through. Remove and set aside.
In the same skillet, reduce heat to medium and add butter.
Once melted, stir in garlic, Dijon mustard, red pepper flakes, and paprika. Cook for 1–2 minutes until fragrant.
Return the chicken to the pan and stir to coat with the sauce.
Add cooked linguine to the skillet. Toss everything together until well combined.
Squeeze in lemon juice, sprinkle with parsley and Parmesan, and serve warm.