There are many resouces online you can use to make your own fajita seasoning. Or you could go to libaray or book store to search for the right cooking book.
Fajita can certainly be cooked at home. There are dozens of fajita recipes on Food.com. Many grocery stores also sell small fajita seasoning packets for about $1 each. This is a very simple way to get the fajita flavoring without having to buy lots of different spices.
Fajita seasoning/Coriander
You can find it at many different places. The primary site you should look to for recepies is this site.. http://busycooks.about.com/od/homemademixes/r/fajitaseasonmix.htm
nothing. cumin is irreplaceable
Great fajita recipes are hard to come by. Check with your favorite Mexican restraunt and they may be willing to give you the recipe. If that does't work out for you check out allrecipes.com for a good recipe.
The Epicurious website.
Yes, you can put sour cream on a fajita. It is actually very good and required in the recipe. Trust me, I have tried it! Yes you can, here in Texas it's required.
Irvine Spices Smokey Rotisserie Blend Seasoning
Chicken fajita recipes can be found all over the internet for free. The easiest and most authentic recipes can be located on the Food Network website and allcooks.com.
heb tortillas (I get the 20 count and SEARCH for the $.99 stack) chicken heb fajita seasoning avocado sour cream salsa cheese
You CAN substitute Poultry Seasoning for Thyme, if you are not a fan of Thyme, and do like the flavor of Poultry Seasoning; however, if you are substituting it because you do not have Thyme, it is not going to have the same effect. Poultry Seasoning contains: Sage, Rosemary, Parsley, Marjoram, Salt, Pepper, and Onion Powder. If you DO substitute it, keep in mind that your recipe is calling for a specific measurement of Thyme, and it would not take as much of the Poultry Seasoning in the recipe. Also, you will need to account for the extra salt, if the recipe calls for salt, make sure you don't add quite as much as it calls for, since the Poultry Seasoning will add more salt to the recipe.