Cut the chicken into bite-sized pieces.
Julienne the onion and bell pepper.
Heat cooking oil in a pan and stir-fry the chicken.
Once the chicken is cooked, add the onion and bell pepper and stir-fry together.
Add tomatoes and corn, and season with salt and pepper.
Lightly warm the tortilla in a pan.
Place the stir-fried ingredients and cheese on the tortilla.
Roll up the tortilla and place it on a plate.