In a large bowl, combine the chicken cubes and dill pickle juice. Marinate in the refrigerator for at least 1 hour, or up to 4 hours for more flavor.
Preheat your grill to medium-high heat. If using wooden skewers, soak them in water for 30 minutes to prevent burning.
In a small bowl, mix together garlic powder, onion powder, black pepper, and smoked paprika.
Remove the chicken from the marinade and pat dry with paper towels.
Thread the marinated chicken onto the skewers, leaving a little space between each piece.
Brush the skewers with olive oil and sprinkle the spice mixture evenly over the chicken.
Place the skewers on the grill and cook for 10-12 minutes, turning occasionally, until the chicken is cooked through and has nice grill marks. The internal temperature should reach 165°F.
Remove from the grill and let rest for a few minutes before serving.