1. To start, ensure the fish cubes are completely dry. Gently pat them with paper towels until they are free of any excess moisture. Then, cut the fish into uniform 1-inch cubes for even cooking.

2. Next, create the flavorful spice marinade. In a small bowl, combine the vinegar, peri peri seasoning, ginger garlic paste, salt, black pepper, and 2 tablespoon of flour. Mix these ingredients together to form a paste-like consistency.

3. Now, toss the fish cubes in the spice mixture until they are evenly coated. Allow the fish to marinate for at least 15 minutes, or up to 2 hours in the refrigerator for even more intense flavor.

4. To achieve the perfect crispy texture, set up a breading station. In separate dishes, prepare the remaining all-purpose flour, beaten egg mixed with milk, and panko breadcrumbs mixed with dried parsley.

5. Heat oil in a skillet or deep fryer to 350°F. Working in batches, carefully add the breaded fish nuggets to the hot oil and fry for 3-4 minutes, turning them halfway, until they are golden brown and crispy.

6. Once the Spicy Fish Nuggets are fried to perfection, remove them from the oil and place them on a paper towel-lined plate or wire rack to drain any excess oil. Serve these beauties hot, accompanied by your favorite dipping sauces for an added flavor punch.