Both work well! However, there are some areas where homemade chili seasoning outweighs store bought. In terms of money, making chili seasoning at home is less expensive because you can use spices you already have in your pantry and make as much as you would like. You might find that homemade chili seasoning also tastes better than a pre-packaged blend since it is fresher and you get to control the exact amount of each ingredient. If you want to make the seasoning spicier you can add more chili powder, or add more Italian seasoning to deepen the earthy taste. While you can add spices to store bought seasonings, it’s usually easier to do when you make it yourself. Overall, you can use store bought or homemade seasoning, it just depends on what is easiest for you!