Preheat oven to 400 degrees. Line a 9x13 baking with non-stick foil.
In the baking dish, mix sliced chicken, bell peppers, onions, olive oil, and fajita seasoning. Bake for 20-25 minutes.
On a baking sheet, bake sweet potato fries at 400 degrees for 20-25 minutes (I baked mine at the same time as the chicken).
Warm tortillas over a med-low heat in a skillet. Once warmed, begin building fajitas. Start with the pepper/chicken mixture; next add a few sweet potato fries; top with cheese, salsa, etc.
Enjoy!