Blackened Chicken Sandwiches

These are perfect for tailgating - all the prep is done ahead of time and they are simple to cook and delicious! Credit to my big brother Tad for perfecting the method and teaching it to me. I use his special blend of blackening spice which is secret, but I have included a very good one below. Feel free to modify it to your tastes!

Ingredients
       3lb bag(s) of frozen chicken breasts (defrosted) or Fresh boneless breasts
   1   Zip-Lock Freezer Bag, gallon size
        Blackening Spice (recipe below)
        Vegetable Oil


Blackening Spice Recipe
    12 bay leaves, finely crushed
    3 tsp salt
    2 tsp. paprika
    1 tsp. sugar
    1 tsp. granulated onion
    1 tsp. granulated garlic
    1/2 tsp cayenne pepper
    1/4 tsp. basil
    1/4 tsp. oregano
    1/4 tsp. thyme
    1/4 tsp black pepper
    1/4 tsp white pepper