Cut the chicken breasts into bite-size cubes. Season them with cumin, paprika, black pepper, garlic powder, salt, and olive oil. Make sure every piece is well coated. Let it marinate for at least 30 minutes.

In the meantime, soak the skewers for 30 minutes.

Cut the onions and the bell pepper into cubes about the same size as the chicken pieces.

Thread the chicken and the veggies onto the skewers.

Grill the chicken skewers until the chicken is completely done. If you use the oven, bake them for 20 - 30 minutes at 180ºC (350ºF).