Everything Bagel Seasoning in available in most grocery stores. I found mine at Costco. Other stores that sell it: President’s Choice, Trader Joe’s, Albertson’s, Safeway — to name a few.
Note: some versions of Everything Bagel seasoning do not include salt. (You will have to add more salt, if that’s the case.)
If you can’t find it, make your own at home with this recipe.