In a medium saucepan, heat 1 1/2 in. oil until it registers 375° on a deep-fry thermometer.

Meanwhile, mix flour with 1/4 tsp. salt in a shallow plate. Put eggs and panko in separate shallow plates.

Dip avocado in flour, shaking off excess. Dip in egg, then panko to coat.

Fry a quarter of avocado slices at a time until deep golden, 30 to 60 seconds.

Transfer slices to a plate lined with paper towels. Sprinkle with salt to taste.