Cut your chicken into thin slices.
Add 2 tbsp olive oil, lime juice, and seasonings into a bowl or large zip lock bag.
Add chicken, turn to coat and let marinate. (30 min.- 8 hours)
Cut peppers and onion into thin strips.
Add to skillet with remaining 2 TBS olive oil and cook until caramelized. Stir occasionally.
Remove from pan and set aside.
Add chicken to skillet, stir and cook until no longer pink in the middle. (Approximately 6-10 minutes depending on the thickness of strips)
Throw veggies back in the skillet with chicken for the last couple minutes to heat back through.
Spoon into tortillas and add additional desired toppings.