Salmon Kebabs With Nigella

Name: Salmon Kebabs With Nigella
Ingredients: 2 pounds (910 grams) center-cut skinless salmon fillet, cut into 2-inch (5-centimeter) chunks; 2 tablespoons chopped fresh parsley; 2 tablespoons chopped fresh mint; 2 tablespoons chopped fresh chives; 2 teaspoons Aleppo pepper; 1 teaspoon ground cumin; 1 teaspoon fine sea salt; 1/2 teaspoon freshly ground black pepper; 1/2 teaspoon nigella seeds; 1/2 cup (120 milliliters) extra-virgin olive oil; 1 red onion, cut into wedges; 1 lemon (Meyer lemon, if available), cut into wedges