In a bowl, combine the kefir, smoked paprika, sweet paprika, curry, salt, and pepper. Mix well and add the chicken. Coat the chicken in flour and cornstarch, then fry the chicken.

In a blender, mix the 2 eggs, sunflower oil, vinegar, juice of 1 lime, and salt to make mayonnaise.

Mash the avocado and add lime juice and a little salt. Cut the buns in half and layer with lettuce, chicken, hot sauce if desired, cheese, the avocado mixture, and mayonnaise. Serve.