Place the wooden skewers in water to soak for at least 30 minutes, preventing them from burning on the grill.
In a large mixing bowl, whisk together lemon juice, Greek yogurt, minced garlic, paprika, cumin, olive oil, salt, and black pepper until well combined, creating a fragrant marinade.
Add the chicken cubes to the bowl with the marinade, tossing to coat all pieces evenly. Cover and refrigerate for at least 1 hour, up to 3 hours, to deepen the flavors.
Preheat your grill to medium-high heat, around 200°C (390°F). Lightly oil the grates to prevent sticking and ensure good grill marks.
Thread the marinated chicken pieces onto the skewers, alternating with chunks of bell peppers and onions for color and flavor. Leave a small space between pieces for even cooking.
Place the skewers on the hot grill, about 4 inches from the heat source. Cook for 10-12 minutes, turning every 2-3 minutes with tongs, until the chicken is golden brown and slightly charred at the edges.
Check that the internal temperature of the chicken has reached 75°C (165°F) and that the juices run clear when pierced. The meat should be opaque and browned with grill marks.
Remove the skewers from the grill and let rest for 5 minutes. This helps the juices redistribute, keeping the chicken tender and moist.
Serve the chicken kebabs hot off the grill, garnished with fresh herbs or lemon wedges for an extra burst of flavor. Enjoy the smoky, tender bites with your favorite sides.