1. 1. Prepare the Chicken and Aromatics: Begin by cutting your boneless, skinless chicken thighs or breasts into uniform 1-inch pieces. Place the chicken pieces into the bottom of your slow cooker. Add the chopped yellow onion and minced garlic over the chicken.

2. 2. Add the Liquid and Seasonings: Pour the undrained can of diced tomatoes and the chicken broth over the chicken and vegetables. Sprinkle in the dried Italian seasoning, salt, and black pepper. Give everything a gentle stir to combine the ingredients and distribute the seasonings evenly.

3. 3. Start the Slow Cooking Process: Cover your slow cooker with its lid. Set the slow cooker to cook on the “low” setting for 6-8 hours, or on the “high” setting for 3-4 hours. The chicken should be fork-tender when done.

4. 4. Incorporate the Spinach: About 30 minutes before the cooking time is complete, or once the chicken is fully cooked, remove the lid. Add the entire bag of fresh spinach to the slow cooker. Stir it gently into the hot stew until it has completely wilted and is well combined, which usually takes just a few minutes.

5. 5. Stir in the Creaminess: Once the spinach has wilted, add the softened cream cheese cubes and the heavy cream to the slow cooker. Stir continuously until the cream cheese has fully melted and is smoothly incorporated into the stew, creating a rich, creamy sauce.

6. 6. Taste and Serve: Taste the stew and adjust any seasonings if necessary. Serve hot and enjoy your delicious, low-carb chicken and spinach stew!