Cooking Question

I asked my Facebook first and got no answer.

For my first time at 5 Guys, they gave me some Cajun seasoning. I had enough left over to take home and use on baked potatoes.  It tastes fantastic!

but now I don't know what to buy to replicate it. I studied the seasoning aislewhich was just confusing. I'm not sure which Cajun seasoning to try or just try Paprika?  But then Sriracha has a very similar color and consistency to what 5 Guys uses?

I don't really cook and I'm lost, can any of you help?