For Salad: On four chilled plates equally divide the Bibb and arugula.
On the bed of greens, arrange the avocado slices and grapefruit segments.
Garnish with the grapes and red pepper. Combine the ingredients for the dressing and drizzle over the entire salad.
For Dressing: Combine the ingredients for the dressing.
Add a final garnish of the minced chives or parsley and the toasted pecans. Serve chilled.