In a small bowl whisk together the oil, vinegar, mustard, garlic, chili flakes, sea salt, & pepper.
Prepare the oranges. Cut off the ends and use a pairing knife to cut and remove the peel and pith.
Holding the orange in your hand over a salad bowl, carefully cut between the membranes into segments. Place orange segments in a glass salad serving bowl.
On a clean cutting board, cut off the root ends of the fennel bulbs. Slice down the center of the fennel bulb.
Place the fennel on its cut side and thinly cut half-moon slices parallel to the root end.
Place the fennel slices into your bowl along with the olives and fresh herbs.
Drizzle your dressing over and toss gently to coat.
Allow your salad to marinate for at least 15 minutes, to allow the flavors to develop.
Serve and enjoy!