In a small bowl, stir together the remaining ingredients until the mayonnaise is no longer lumpy. Pour the dressing over the coleslaw mix, toss to coat, and refrigerate until ready to serve.
Macros per serving (6 servings total): 229 calories, 3 grams net carbs, 1 gram protein, 24 grams fat.
For the Fish Fingers
Cut the fish into strips and sort into two groups according to thickness.
On a large plate, mix together the pork rind crumbs, parmesan, parsley, Old Bay, and pepper and toss with a fork. Beat the egg in a small bowl. Place both of those next to your stovetop.
Heat the avocado oil in an enameled cast-iron skillet over medium-high heat. Once the oil is hot, dip a fish finger into the egg, then roll it in the crumbs until it's well-coated. Place carefully into the oil and repeat with the remaining fish fingers in that size group.
Cook for about 3-4 minutes, until you can see the golden brown on the bottom of the fish pieces. Turn them carefully with tongs and cook for another 3-4 minutes. Remove from the pan and place them on a plate lined with paper towels. Repeat these steps with the remaining fish.
Macros per serving (4 servings total): 362 calories, 0 grams net carbs, 30 grams protein, 27 grams fat.
For the Tartar Sauce
Combine all ingredients in a small ramekin. Split evenly between the finished plates to serve as a dipping sauce, or serve directly on the fish.
Macros per serving (4 servings total): 101 calories, 0 grams net carbs, 0 grams protein, 12 grams fat.