There are many different types of Cajun seasoning, but the most common spices used are paprika, garlic powder, salt, black pepper, cayenne pepper, and dried oregano. I like to make my own Cajun seasoning because I can control the amount of each spice that goes into it. That means I can make it just the way I like it, including making it spicier or less spicy depending on my mood. However, you can definitely use a store-bought seasoning blend if that’s what you have on hand. Tony Chachere's, Zatarain's, and Louisiana Kitchen are three popular ready-made cajun spice blends to try.