Preheat oven to 350°F. Line a baking sheet with parchment paper and brush oil over parchment. Set aside.
To make burgers, process onion, parsley, cumin, garlic, sriracha hot chili sauce, egg chickpeas, bulgur, ⅓ cup panko and a pinch of salt. Pulse a few times until mixture is still slightly chunky. Set aside.
Place remaining cup of panko bread crumbs in a plate. Scoop out ⅓ cup chickpea burger mix at a time, and place in panko bread crumbs. Coat patties lightly in remaining 1 cup of panko bread crumbs, being gentle to ensure patty keeps its puck-like shape.
Bake at 350°F for 20 minutes, remove from oven and flip burgers. Cook 15 minutes more.
Serve on buns topped with sriracha mayo, lettuce, tomato and onion.
*How to Cook Bulgur
Place ¼ cup bulgur in a bowl, top with ½ cup boiling water. Cover bowl and allow to sit at room temperature for 10 minutes or until all water is absorbed.