Rinse the soaked preserved lemon in cold water and slice it lengthwise into 4 pieces. Using a spoon or paring knife, scrape off the pith and discard.
Finely dice the preserved lemon flesh and transfer it to a small bowl. Stir in the pickled pepper brine, olive oil, shallots and fresh lemon zest. Serve over roasted vegetables or toss with salad greens.