Combine dressing ingredients (garlic, olive oil, lemon zest, lemon juice, balsamic, mustard, soy sauce, brown sugar, paprika, salt and black pepper) in mason jar. Close the lid and shake ingredients together until well combined. Or combine all ingredients together in medium bowl and whisk until combined. Set aside.
Lightly coat romaine lettuce head with oil. Grill the lettuce until they’re individually cooked and slightly charred.