1Slice the avocado into wedges.
Squeeze the juice of one lemon over the avocado slices to prevent browning.
In a bowl, mix the tempura batter mix with water according to the package instructions.
Dip each avocado slice into the tempura batter, ensuring they are well-coated.
Heat oil in a deep pan over medium-high heat.
Fry the battered avocado slices until golden brown and crispy, about 2-3 minutes per side. Remove and drain on paper towels.
Toast the small taco shells in a dry skillet over medium heat until warm and slightly crispy.
In a small bowl, mix the chili powder and cayenne pepper.
Sprinkle the fried avocado slices with the chili powder and cayenne pepper mixture.
Assemble the tacos by placing a few avocado slices in each taco shell.
Garnish with sesame seeds.
Serve immediately and enjoy your Spicy Avocado Tempura Tacos!