In a small bowl, combine the nutritional yeast, smoked paprika, chili powder, sea salt, and black pepper to create the signature smoky seasoning.
Heat a non-stick skillet over medium-high heat and brown the ground beef until cooked through, then drain any excess fat.
Stir half of the prepared seasoning into the beef with a splash of water and simmer for 2 minutes until the liquid has evaporated.
Lightly dampen the corn tortilla with water, sprinkle the remaining seasoning on both sides, and bake at 400°F for 5-7 minutes until it becomes a crisp shell.
Whisk together the Greek yogurt, garlic powder, onion powder, dried dill, and lime juice in a separate bowl to create the zesty ranch dressing.
Shred the romaine lettuce and dice the tomato for the fresh toppings.
Assemble the taco by filling the crisp shell with the seasoned beef, lettuce, and tomato, then finish with a generous drizzle of the creamy ranch sauce.