Adjust rack to top position and preheat oven to 425 degrees. Wash and dry produce.

Cut potatoes into ½-inch-thick wedges. Mince a few pickle slices until you have 1 tsp (2 tsp for 4 servings).

Toss potatoes on a baking sheet with a large drizzle of oil, ½ TBSP Cajun Spice Blend (you’ll use more in the next step), salt, and pepper.

Roast on top rack until golden brown and tender, 20-25 minutes.

While potatoes roast, in a small bowl, combine mayonnaise, hot sauce, minced pickle, and ¼ tsp sugar (½ tsp for 4 servings). TIP: If you like things less spicy, add hot sauce to taste.

In a medium bowl, combine sour cream with 4 TBSP water (8 TBSP for 4); season with salt and pepper.

In a shallow dish, combine flour, cornstarch, 1 TBSP Cajun Spice Blend (2 TBSP for 4), 1 tsp salt (2 tsp for 4), and pepper. (You’ll use the rest of the Cajun Spice Blend in the next step.)

Pat chicken* dry with paper towels. Place between two large pieces of plastic wrap; pound with a mallet or heavy-bottomed pan until about ⅓ inch thick. Season all over with salt, pepper, and remaining Cajun Spice Blend.

Working one piece at a time, coat chicken in flour mixture, then dip into sour cream mixture until fully coated on both sides; press again into flour mixture. Shake off excess flour and set aside on a plate.

Heat a ⅓-inch layer of oil in a large, preferably nonstick, pan over medium-high heat. Once oil is hot enough that a pinch of flour mixture sizzles immediately when added to the pan, add coated chicken. Cook until golden brown and cooked through, 3-5 minutes per side. TIP: Fry in batches if necessary; lower heat if chicken begins to brown too quickly.

Transfer to a paper-towel-lined plate. Season with salt.

While chicken cooks, halve and toast buns.

Spread cut sides of buns with 2 TBSP butter (4 TBSP for 4 servings).

Spread cut sides of buns with secret sauce. Fill buns with chicken and as much sliced pickle as you like.

Divide sandwiches between plates and serve with potato wedges on the side. TIP: If you have some on hand, serve with ketchup for dipping.