To make the pancetta gremolata, heat the oil in a frying pan over a medium heat.
Add the pancetta, breadcrumbs and garlic, stirring constantly for 5 minutes or until crispy and golden.
Remove from heat, allow to cool before combining with lemon rind, parsley and pepper. Set aside for later.
To make the salad, combine the rocket, fennel, pear, walnuts, olive oil, lemon juice, half the parmesan and half the gremolata together in a large bowl, tossing until well combined.
Place salad on a serving platter and scatter over the remaining parmesan and gremolata.