Preheat grill to 200°C and line an oven tray with aluminium foil.
Toss broccolini, tomatoes and corn with lemon zest, salt, pepper and oil.
Spread out evenly over the oven tray and cook for 5 minutes until the tomatoes blister and the broccolini starts to brown.
While the vegetables are cooking, toast the seeds together in a frypan until they turn golden, roemve from heat and set aside.
Remove vegetables from the grill, assemble on a plate and sprinkle the seeds, herbs and parmesan cheese on top.
Serve immediately while hot or at room temperature.