01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper.
02 - Pat the drained beans very dry with paper towels; remove as much moisture as possible for maximum crispiness.
03 - In a large bowl, toss the beans with olive oil, harissa paste, smoked paprika, garlic powder, cumin, salt, and black pepper until evenly coated.
04 - Spread the beans in a single layer on the prepared baking sheet.
05 - Roast for 20–25 minutes, stirring halfway through, until the beans are crispy and golden brown.
06 - Let cool slightly. Transfer to a serving bowl and top with parsley, lemon zest, and a drizzle of tahini, if desired. Serve warm or at room temperature.