Set the oven to broil temperature.
Rub 1-2tbsp mustard on chicken pieces and season with garlic powder, cumin, pepper, red pepper.
Cut bell peppers and onions into big chunks.
Assemble the kabob, alternating chicken and veggies.
Lightly spray a skillet with olive oil and place on medium-high heat. Place the assembled kabobs in the skillet. Rotate them until all sides are seared.
Place kabob in the oven and cook for about 4-6 minutes, careful not to over cook or burn.
Enjoy!