01 -
Boil spaghetti in a large pot of salted water according to package directions. Drain thoroughly and set aside.
02 -
Heat olive oil in a large skillet over medium heat. Season chicken breasts evenly with salt, black pepper, and smoked paprika. Sear chicken for 6 to 7 minutes per side, ensuring internal temperature reaches 74°C (165°F). Transfer cooked chicken to a cutting board, slice into strips, and reserve.
03 -
In the same skillet, melt butter. Sauté diced onions and minced garlic for 2 to 3 minutes until softened and fragrant.
04 -
Add chicken broth, bringing the mixture to a gentle simmer. Stir in heavy cream and cook for an additional 2 minutes until slightly thickened.
05 -
Lower heat to low, then add shredded Monterey Jack cheese and grated Parmesan cheese. Stir continuously until both cheeses are fully melted and sauce is smooth.
06 -
Add the cooked spaghetti to the skillet and gently toss to evenly coat pasta with the creamy sauce.
07 -
Arrange sliced chicken on top of the pasta. Sprinkle with chopped parsley and crushed red pepper flakes, if desired. Serve hot.