Preheat oven to 350F. Spread Tostitos^® Restaurant Style tortilla chips in a single layer on a large cookie sheet.

Heat oil in a medium frying pan over medium heat. Add red onions and cook, stirring frequently, until onions have softened slightly, 2 minutes. Allow to cool slightly.

Sprinkle cheese evenly over chips. Top with onion, chicken and peppers.

Bake in preheated oven until cheese melts, 7‑9 minutes. Serve warm with your favourite Tostitos^® Salsa.