Boil or grill the chicken breast and shred it finely.
Finely chop onion, bell pepper, corn, and other vegetables.
Add oil to a pan and sauté the chicken breast with the vegetables.
Season with salt, pepper, and taco seasoning.
Place the sautéed ingredients and cheese on a tortilla.
Roll up the tortilla and lightly grill both sides in a pan.
Slice into appropriate sizes and plate.