For chicken spaghetti I would use green herbs...oregano, basil, rosemary, parsley & thyme are really good. If you don’t want to use a single herb buy Italian seasoning herbs. Add some salt, pepper, grated cheese (Italian mix or mozzarella, Parmesan, etc) and sautéed garlic and sautéed mushrooms if you like mushrooms.
I like sweet potatoes with North African flavours - perhaps chicken marinated with lemon juice, garlic, cumin, ground coriander (cilantro), basil, ginger and cinammon. Griddled or barbecued. My mouth is watering! 🤪
Italian: Rather than taco seasoning and salsa use a teaspoon of Italian herbs and a tablespoon of tomato paste. Add some water to the tomato paste to get the consistency you like. Garnish with some parmesan.
Chinese: You could also use ground pork and instead of taco seasoning and salsa add some stir fry sauce you like and garnish with green onions and sprouts.
South Asian: Or make it more south Asian and use chicken for the meat and add some curry powder (or curry paste) and yogurt or coconut milk. Garnish with coriander.
None of this is "authentic" but all easy to make and the flavours will work!
Instead of taco, try herbs de province and butter. I've been finding that herb mix to be going well in a lot of things. It's frequently used for French onion soup.
If you are using ground beef use beefy onion powdered soup concentrate. Its in the soup aisle. If you like to add more veggies add green peas and carrots and large chopped onions and mushrooms. Tastes great as a potato topping.
This is basically what a shepherds pie is except that on shepherds pie you take the potato a step further and mash it and bake it on top of the beef mixture but this mixture also works well as a topper.
@iamnikki Better than the taco meat from the original recipe I would imagine. I actually had a sweet potato shepherds pie and it tastes good. This frozen one is ok also but it uses ground turkey instead of beef.