In a large bowl, combine sugar and orange zest and rub together with your fingers until fragrant.
Add the egg, oil, vanilla yogurt, and lemon juice. Whisk until smooth.
Stir in the semolina until combined. Add chocolate chips and baking powder and mix into a thick dough.
Cover and chill the dough so it firms up.
In a separate bowl, mix the extra semolina and desiccated coconut for coating.
Shape the dough into balls, then gently flatten into thick discs.
Roll each cookie in the coating mixture until fully covered.
Place on a parchment-lined baking sheet and bake until set and lightly golden.
Cool for a few minutes on the pan, then transfer to a rack to finish cooling.
