Slice your French baguette on a slight diagonal angle. Brush the tops with olive oil and place on a large baking pan (cookie sheet). Sprinkle each slice with a little coarse sea salt and freshly ground pepper.
Place baking sheet in the oven and bake for 12-15 minutes, carefully watching your crostinis around minute 12, since oven temperatures vary. Remove from oven when golden brown and let them cool.
Spread hummus on each crostini, garnish with Feta and olives, drizzle with olive oil.