Preheat oven to 180°C (350°F). Spread hazelnuts and almonds on a baking tray and roast for 7–8 minutes, until golden and fragrant. Let cool, then rub off hazelnut skins if needed.
In a dry skillet, toast sesame seeds and sunflower seeds over medium heat until golden (2–3 minutes). Remove and set aside.
Toast cumin, coriander, and fennel seeds in the same skillet for 1–2 minutes, until aromatic.
Combine all nuts and seeds in a food processor or mortar and pestle. Pulse or pound until coarsely ground—aim for a texture with some crunch, not a powder.
Stir in Aleppo pepper, smoked paprika, salt, and black pepper. Taste and adjust seasoning.
Store in an airtight jar for up to 1 month