In a medium bowl whisk together the flour, fennel seeds, cinnamon, baking powder and salt.
In a large bowl, mix together the sugar, olive oil and orange zest. Add eggs one at a time, stirring after each addition.
Add flour mixture to wet ingredients. Stir. Dough may be very dry. Fold in hazelnuts and figs. If dough is too crumbly add a drop or two of olive oil.
Place dough on baking sheet and pat into a 12x5 rectangle. Bake for 30-35 minutes.
Remove from the oven and reduce the temperature to 300. Place on a cooling rack and let cool for 15 minutes.
Using a serrated knife cut the biscotti in ½ inch slices. Arrange on baking sheet, cut side down. Bake again until dry and golden, about 20 to 25 minutes.
Remove from baking sheet and place on cooling rack. Let cool completely.