In a large skillet (that has a cover available) or Dutch oven, heat oil over medium-high heat. Add cut-up chicken, season with salt and pepper, and cook, stirring occasionally, for 5 to 7 minutes or until cooked through. Remove to a clean plate or a bowl and cover with foil.
1 tablespoon olive oil, 2 pounds boneless skinless chicken breasts, ½ teaspoon kosher salt, ¼ teaspoon ground black pepper
Return pan to medium heat and add onions and bell pepper. Saute for 3 to 4 minutes before adding mushrooms. Continue to cook, stirring frequently, until onions are translucent. Add kale and garlic; cook for 1 to 2 minute or until kale is wilted and garlic is fragrant.
½ large yellow onion, diced, 1 red bell pepper, diced, 8 ounces white or cremini mushrooms, sliced, 5 ounces baby kale, baby spinach, or finely chopped kale, 1 clove garlic, minced
Add chicken broth, diced tomatoes, and Worcestershire sauce. Cover and bring to a boil.
Add spaghetti (you might want/need to crack it in half to fit in the pan) and stir and push spaghetti down into liquid.
1 pkg. (13.25 ounces) whole wheat spaghetti
Reduce heat to medium, and cover and cook, stirring frequently, until pasta is al dente. This will take about 10 minutes for regular spaghetti, but refer to the package directions for the pasta you choose. (Keep in mind that pasta takes slightly longer with the one pot method.)
When pasta is al dente, return the chicken to pan and stir to combine.
Reduce heat to low. Warm heavy cream in microwave for 35 to 45 seconds (be sure to use a microwave safe measuring cup). Gradually stir the cream and shredded cheese into pasta (don't add it all at once). Stir to combine and to melt cheese.
½ cup heavy cream, 2 cups shredded sharp white cheddar cheese
Check seasoning, adding more salt and pepper if necessary. Stir in parsley and serve immediately.
¼ cup minced parsley
Notes
Choose the right pan. Be sure you choose a pan that is large enough to hold everything. I usually use my Dutch oven or a straight-sided large skillet with a lid. The pan in photos is NOT the pan this pasta was cooked in.
Yield: This recipe makes at least 6 generous servings.
Variations: You can use different types of chicken, including rotisserie chicken. Try ground Italian sausage or links with the casings removed. You can also omit the chicken and make it vegetarian. Try different vegetables if you like. Different types of cheese can be substituted (mozzarella is great!).
Bake it! Turn this skillet dinner into a casserole. Spray a 9 x 13-inch pan with nonstick cooking spray, spread the chicken spaghetti evenly into it, and bake at 350ºF for 25 to 35 minutes (cook time will depend on if it's already warm or if it is cold) or until warmed through and crispy on top.