Combine the tequila, lime zest, lime juice, orange zest, orange juice, garlic, 3 tablespoons olive oil, Old Bay seasoning and chili powder in a shallow bowl. Mix with a whisk and add the fish and turn several times to make sure it is thoroughly coated. Let the fish marinade for 10 minutes per side.
Preheat your cast-iron grill skillet to medium-high. Or heat your outdoor grill to medium high.
Heat the remaining 1 tablespoon of olive oil in the grill pan, then add the fish and cook, turning once, about 3-4 minutes per side. It is done when it flakes easily with a fork. If you're using outdoor grill. Use that tablespoon of olive oil to coat the grates of the grill before adding fish.
When the fish has cooked through, remove it to a plate. Let it rest 1 minute, then flake it apart into big chunks with a fork.
Assemble the tacos: place some fish chunks in a tortilla, then drizzle with Homemade Roasted Tomatillo Salsa, cabbage and cilantro. Give it a good squeeze of lime juice and serve immediately.
This recipe can be cooked using a stovetop grill pan, an outdoor grill or even a good seasoned cast iron skillet.Looking for a more spicy taco? Slices of fresh jalapeno are always a good choice.