For the aioli, place all the ingredients, except the salt and pepper, in the bowl of a food processor and blend until the mixture is smooth. Transfer the aioli to a medium bowl. season with salt and pepper.
For the sandwich, add the shredded chicken to the aioli and mix well. Preheat a heavy-bottomed frying pan over medium heat. Using tongs, add the tortillas, one at a time, and cook until warm, about 30 seconds each side.
Place the warm tortillas on a work surface and spread with the chicken mixture, leaving a 1-cm border. Sprinkle the rocket over the chicken mixture.
Carefully roll up the tortillas and cut each rolled sandwich in half, diagonally, and transfer to a serving platter. Serve.