Preheat the air fryer to 400°F (200°C).

Prep the potatoes by cutting them into thick fries. Soak the cut potatoes in cold water for about 15 minutes to remove excess starch, then pat them dry with a clean towel.

Mix the water and lemon and refrigerate until ready to serve.

Make Tartar Sauce: Combine all ingredients until fully combined. Season with salt and pepper to taste. Refrigerate until ready to use.

Dip each fish filet into the flour coating it well, then into the egg, then coat well with breadcrumb.

Place the battered fish filets in the preheated air fryer basket.

Put the fries in a separate air fryer basket. Drizzle them with oil and sprinkle with salt. Place both the fish and fry baskets in the air fryer. Cook at 400°F (200°C) for about 12-15 minutes, or until the fish is golden brown and crispy and the fries are cooked through and crispy.

While the fish and chips are cooking, prepare the lemon water. In a pitcher, combine the sliced lemons and water. Add ice cubes if desired.

Once the fish and chips are cooked, remove them from the air fryer and transfer to a plate lined with paper towels to absorb any excess oil.

Serve the fish and chips hot with lemon wedges and tartar sauce on the side.