One part each of cayenne, paprika, ground black pepper, garlic powder, onion powder; 1/2 part dried thyme, 1/2 part dried oregano...
In Hawaii we use this a lot on ahi...block our your ahi like you were going to slice it into sashimi...roll the fish rectangles in the rub. Spray a non stick skillet with spray grape seed oil...heat till hot...sear each of the four sides of the fish for about 10 seconds per side, making sure center is still raw...remove and let cool. Slice it into sashimi, serve with grated ginger and shoyu (soy sauce for you mainlanders)...as we say in the islands..."broke da mouth"...