For spicy chicken with cucumber salad, first preheat the oven to 200 °C (convection oven 180 °C). In a shallow container, mix the grated coconut with the lime zest and a pinch of chili flakes. Gently season with salt and pepper. Pour the beaten egg into a separate shallow container.
Dip the chicken breasts first in egg and then roll in the coconut mixture. Place on a baking sheet, drizzle with coconut oil and cook in the oven for 18-20 minutes or until the crust is golden and any escaping meat juices run clear.
In the meantime, prepare the salad. For this, mix the vinegar with the sugar until the latter has dissolved. Mix the cucumber slices with the dressing and sprinkle with the herbs and the remaining chili flakes.
Arrange chicken and salad on plates, add lime wedges and serve spicy chicken with cucumber salad.