Supreme the oranges: using a sharp knife, slice off top and bottom. Slice all the peel and pith from the fruit. Slice along the membrane of the orange to remove each section. Set aside.
Whisk together dressing, set aside.
In a large bowl combine radicchio, fennel, onion, feta, pumpkin seeds and parsley. Gently mix in quinoa. Lastly add orange slices.
Remove to serving plates and drizzle with dressing.