Make the Greek yogurt sauce by mixing together all of the ingredients in a small bowl. Place in the fridge until ready to serve.
Preheat the oven to 425°F.
In a large bowl, combine all of the burger ingredients except the oil. Use your hands to mix well and form 4 patties.
Heat the oil in a large ovenproof skillet over medium heat, swirling to coat the bottom of the pan. Add the patties and sear for about 2 minutes on each side until golden brown.
Carefully transfer the pan to the oven and bake for 7 to 10 minutes, until cooked through.
While the burgers are baking, smear about a tablespoon of hummus inside each pita pocket. Stuff with the veggies and top with the cooked burgers. Either drizzle the Greek yogurt sauce inside or serve it as a dip.
