Combine the seasonings mix ingredients in a small bowl.
Sprinkle each side of each filet evenly with 1/2 teaspoon of this mixture.
Preheat a 10-inch skillet over high heat to 400, about 5 minutes.
Spray the top side of each filet evenly with vegetable cooking spray.
Place the filets, two at a time (sprayed side down), in the skillet, reduce the heat to medium, and cook 2 minutes.
Turn the filets over and cook until done, about 2 minutes more.
Remove the cooked filets, wipe the skillet clean, bring the heat back to 400, and repeat the process with the remaining filets.