Heat olive oil in a 12-inch skillet over medium-high heat (a heavy non-stick skillet works well or for more blackening use a cast iron skillet).
Sprinkle both sides of salmon with a fair amount of salt and pepper and sprinkle and rub both sides with chili powder and cumin.
Sear in skillet about 3 to 4 minutes per side, or until just barely cooked through. Transfer to a cutting board.
While salmon is cooking prepare the taco slaw. In a large mixing bowl toss together cabbage, mayonnaise, lime zest, lime juice, honey, cilantro and garlic. Season with salt and pepper to taste.
Flake cooked fish into bite size chunks (I just use a knife and spoon, a fork works too).
Layer warmed tortillas with taco slaw, salmon and any desired toppings then serve right away.