Add spices, jalapeño, lime juice, coriander, salt, and pepper to a food processor and pulse into a paste, adding water if needed.
Dice chicken, coat with marinade, and refrigerate for a few hours or overnight.
If using wooden skewers, soak in water for 30 minutes. Thread chicken, peppers, and onion alternately onto skewers.
Spray skewers and ingredients with cooking oil, then grill on high, turning until cooked through (about 15 minutes), or bake at 220°C for 25-30 minutes.
Serve with Mexican Chopped Salad and Mexican Rice.
Notes
Marinate the chicken overnight for best flavor and ensure even cooking.