Wash hands. Wash all fresh, unpackaged produce under running water. Drain well. Place the steak in a stainless-steel mixing bowl. Add the oil and savory steak & chop rub. Mix thoroughly. Place steak pieces on a skewer. Place the skewer on a heated char-grill or broiler. Cook to desired doneness. CCP: Final internal cooking temperature must reach a minimum of 145°F, held for a minimum of 15 seconds. Warm the pita bread on a heated char-grill or broiler. Place the pita bread on a heated serving plate. Place the steak skewer on the bread. Sprinkle with lettuce, tomatoes, red onions, and chopped parsley. Place the tzatziki sauce in a ramekin and serve next to the pita.