Prepare the Shrimp: Chop the peeled and deveined shrimp into small pieces or pulse in a food processor for a finer texture.

Combine the Mixture: In a large mixing bowl, mix the chopped shrimp with panko breadcrumbs, mayonnaise, egg, parsley, Dijon mustard, lemon juice, Old Bay seasoning, garlic powder, salt, and pepper.

Adjust Consistency: If too wet, add more panko breadcrumbs gradually until the mixture achieves a moldable consistency.

Shape Patties: Form small patties from the mixture, about 2-3 inches wide, and place them on a plate.

Heat the Oil: Heat olive oil in a skillet over medium heat until shimmering, about 2-3 minutes.

Fry Cakes: Fry cakes in batches for 3-4 minutes on each side until golden brown and crispy.

Prepare the Aioli: Whisk together mayonnaise, lemon juice, lemon zest, minced garlic, salt, and pepper in a small bowl until smooth.

Serve and Enjoy: Arrange the shrimp cakes on a serving platter with the lemon aioli for dipping.