Preheat the grill to medium-high heat (375-400 degrees F).
Pat the fish dry with a paper towel and brush the fillets with olive oil, sprinkle evenly with adobo seasoning. Season, to taste, with salt and pepper. Allow the fish to rest (about 15 minutes) while you prepare the sauce.
Place yogurt, sour cream, lime juice, garlic, chipotle pepper, and coconut sugar in a blender and blend until smooth. Pour into a bowl, cover, and set aside.
Finely shred the cabbage with a sharp knife or food processor and place it into a large bowl.
Place the tortillas directly on the hot grill for a few seconds on each side. Stack them as they come off and wrap them in foil. Place them in a tortilla warmer if you have one. The warmth will generate enough steam to keep them soft without sticking together.
Cook Mahi Mahi on a grill pan, turn once after 4 minutes, and continue cooking for about another 4 minutes until the filets flake, but aren't falling apart.
Assemble tacos, using two tortillas, and 1/2 filet per taco, then top with shredded cabbage, pickled jalapeños, and a squeeze of fresh lime. Drizzle with chipotle cream, or serve it on the side for dipping. Garnish with your favorite toppings.