Prepare the Chicken Skewers:
In a mixing bowl, combine the olive oil, lime juice, garlic powder, onion powder, cumin, smoked paprika, salt, and pepper.
Add the chicken cubes to the marinade, stirring to coat evenly. Cover and refrigerate for at least 30 minutes (or up to 2 hours) to marinate.
Make the Mango Salsa:
While the chicken is marinating, prepare the mango salsa.
In a medium mixing bowl, combine the diced mango, red onion, red bell pepper, jalapeño, cilantro, and lime juice.
Season with salt and pepper to taste, then gently stir to combine. Set aside for the flavors to meld.
Assemble and Grill the Chicken Skewers:
Preheat your grill or grill pan over medium-high heat.
Thread the marinated chicken cubes onto the skewers, leaving a little space between each piece for even cooking.
Grill the chicken skewers for about 6-8 minutes per side, or until the chicken is fully cooked and has an internal temperature of 165°F (74°C). Use tongs to flip the skewers halfway through grilling.
Serve and Enjoy:
Once the chicken is cooked, remove it from the grill and let it rest for a few minutes.
Serve the chicken skewers with the fresh mango salsa on top or on the side. Enjoy with a side of rice, a salad, or as a light appetizer!