Gently shape beef into 5-inch burgers. Season burgers on both sides with Weber® Steak ‘N Chop Seasoning.
Grill over Direct Medium heat (350° to 450°F) with the lid closed as much as possible, until the internal temperature reaches 160°F for medium, 12 to 15 minutes, turning once.
Serve on hamburger buns, topping each with 1 tablespoon olive tapenade and 1 tablespoon feta cheese.