How to Make It
In a medium bowl, toss the shrimp, avocados, and onion with the lime juice and 2 tablespoons of the oil; season with ½ teaspoon salt.
Heat the remaining ½ cup of the oil in a medium skillet over medium-high heat. Fry the tortillas one at a time until crisp, 1 to 2 minutes per side; drain and season with ¼ teaspoon salt. Top with the shrimp mixture.