Prepare the Cauliflower Steaks: Preheat the oven to 425°F (220°C). Cut the cauliflower into 1-inch-thick steaks, brushing both sides with olive oil and seasoning with smoked paprika, cumin, garlic, salt, and pepper.
Roast the Cauliflower: Place the cauliflower steaks on a baking sheet and roast for 25-30 minutes, flipping halfway through, until golden brown and crispy on the edges.
Make the Tahini Sauce: In a small bowl, whisk together the tahini, water, lemon juice, minced garlic, and salt. Add more water as needed to achieve a smooth, pourable consistency.
Plate and Garnish: Place the roasted cauliflower steaks on plates, drizzle with tahini sauce, and sprinkle with pomegranate seeds. Garnish with fresh herbs and serve.