Slice the hoagie rolls, hamburger style (if not already done). Place the buns, inside facing up, on a baking sheet.
Turn the oven broiler on (I prefer it on low, if your oven has that option), and toast the rolls for 3-4 minutes, until golden. They burn fast, so keep a close eye on them!
Add the chicken, veggies, cilantro, and sauce to the rolls. Serve immediately. Enjoy!