Cook the Linguine: Bring a large pot of salted water to a boil. Add the linguine and cook according to package instructions until al dente. Drain and set aside, reserving 1/2 cup of pasta water.
Cook the Chicken: In a large skillet over medium heat, melt 4 tablespoons of butter. Add the diced chicken breast, season with salt, pepper, smoked paprika, and cayenne pepper. Cook for about 5-7 minutes, or until the chicken is browned and cooked through. Remove the chicken from the pan and set aside.
Make Cowboy Butter Sauce: In the same skillet, add the remaining butter (1/4 cup) and let it melt. Add the minced garlic and sauté for about 1-2 minutes until fragrant, taking care not to burn it.
Combine Ingredients: Add the halved cherry tomatoes to the skillet and cook for another 3-4 minutes until they start to soften. Return the cooked chicken to the skillet and mix well.
Finish the Dish: Pour in the lemon juice and stir everything together. Add the reserved pasta water slowly, mixing until the sauce is well combined.
Add Linguine: Carefully fold in the cooked linguine and toss to coat it in the cowboy butter sauce. Cook for an additional minute to let the flavors meld together.
Garnish and Serve: Sprinkle with chopped parsley and grated Parmesan cheese before serving.
Notes
Adjust the spice levels according to your preference.