Adjust rack to top position (top and middle positions for 4 servings) and preheat oven to 425 degrees. Wash and dry all produce. Trim, peel, and cut carrots on a diagonal into ½-inch-thick pieces. Cut potatoes into ½-inch-thick wedges. Zest and quarter lemon. In a small bowl, combine mayonnaise, honey, and ½ tsp Colman’s English Mustard (1 tsp for 4). Taste and add more mustard if you’d prefer extra heat; set aside.
Toss carrots on one side of a baking sheet with a drizzle of oil, salt, and pepper. On empty side of same sheet, toss potatoes with a drizzle of oil, salt, pepper, and Fry Seasoning. Roast on top rack until veggies are browned and tender, 20-25 minutes. (For 4 servings, divide between 2 baking sheets; roast potatoes on top rack and carrots on middle rack.)
Meanwhile, place panko, lemon zest, and garlic powder in a gallon-size zip-close bag. Season with salt (we used 1 tsp; 2 tsp for 4 servings) and pepper.
Place sour cream in a medium bowl; add pork and turn to coat. Place coated pork in bag with panko mixture and seal to close. Shake until pork is evenly coated. TIP: You may need to move around cutlets in bag, pressing with your hands, to spread out panko and make it stick.
Heat a ¼-inch-layer of oil in a large, preferably nonstick, pan over mediumhigh heat. Once oil is hot enough that a pinch of panko sizzles when added to pan, add pork. (TIP: Depending on the size of your pan, you may need to work in batches.) Cook until panko is golden and pork is cooked through, 2-3 minutes per side. Transfer to a paper-towel-lined plate.
Divide pork, potatoes, and carrots between plates. Serve with creamy mustard sauce for dipping or drizzling over, and lemon wedges on the side.
