01 - Prepare spaghetti according to package directions until al dente. Drain and set aside.
02 - Heat olive oil in a large skillet over medium heat. Season chicken pieces with paprika, Italian seasoning, salt, and pepper. Add chicken to the skillet and cook for 5-7 minutes, or until golden brown and fully cooked. Remove chicken and set aside.
03 - In the same skillet, melt butter over medium heat. Add chopped onion and cook for 3-4 minutes, or until softened. Stir in minced garlic and cook for an additional 30 seconds until fragrant.
04 - Pour in chicken broth and heavy cream. Stir well and bring to a gentle simmer. Reduce heat to low and allow the sauce to thicken slightly, approximately 5 minutes.
05 - Return cooked spaghetti and chicken to the skillet. Toss thoroughly to ensure the pasta is completely coated in the sauce.
06 - Evenly sprinkle shredded Monterey Jack cheese over the top. Cover the skillet and let it rest for 2-3 minutes, or until the cheese is melted.
07 - Remove from heat, garnish with fresh parsley, and serve warm.