Provençal Turkey Kebabs with Grilled Lemon

Name: Provençal Turkey Kebabs with Grilled Lemon
Ingredients: 1¼ pounds boneless, skinless turkey breast, cut into ¾-inch-wide cubes; 2 garlic cloves, very finely chopped; 2 teaspoons extra-virgin olive oil, divided; 1 teaspoon kosher salt, divided; 1 teaspoon dried lavender; ¾ teaspoon fennel seeds; ¾ teaspoon dried marjoram; ½ teaspoon dried rosemary; ½ teaspoon dried savory; ¼ teaspoon dried thyme; ¼ teaspoon black peppercorns, freshly ground; ½ teaspoon dijon mustard; 1 large medium red onion, quartered and sliced crosswise into ¾-inch wide segments; Nonstick pan spray (or olive oil); 1 lemon, halved