Process the parsley in a food processor until coarsely chopped. Add the cream cheese, lemon zest, juice and pinch of salt and pepper. Process until pale green and smooth. Scrape the cream cheese into a zip lock bag. Squeeze it down to one of the bottom corners of the bag and snip 1/4" off the corner of the bag. Top each chip with 1-2 pieces of salmon, pipe on a dollop of the cream cheese, garnish with small parsley leaf.