In a medium bowl, combine 5-6 cups coleslaw mix, 1/2 cup thinly sliced red onion, 2 tablespoons minced fresh dill, 1 tablespoon chopped fresh cilantro, 3 tablespoons white vinegar, 1 tablespoon lime juice and Salt and pepper, to taste. Cover and refrigerate until serving.
Preheat oven to 425 degrees. Brush a large baking sheet with 2-3 tablespoons olive oil. Place salmon on prepared baking sheet. Sprinkle the salmon with Zest and juice of one lime
In a small bowl, combine 2 teaspoons chili powder, 1/4 teaspoon garlic salt, Pinch of cayenne pepper, 1/4 teaspoon salt and 1/4 teaspoon pepper. Sprinkle spice mixture evenly over salmon. Roast for 12-15 minutes, or until cooked through and flaky. Break salmon into large chunks.
Fill warm tortillas with salmon and slaw mixture. Drizzle with sriracha ranch sauce and serve with fresh limes and chopped cilantro for garnish, if desired.