1. Heat and prep grill. Wash beets well and carefully slice into a 1/4" thickness.
2. Toss beets with olive oil, salt, and half of the thyme. Lay beets on grill and let cook on each side for 5-7 minutes, checking frequently.
3. Remove from heat and sprinkle with remaining thyme.
4. Line inside of each pita pocket with 2 tablespoons hummus, then layer lettuce and grilled beets inside. Enjoy!