Mixing all the ingredients from the fajita seasoning recipe in a small bowl. Set aside.
For the Chicken and Peppers
In large bowl, add the chicken strips and half of the fajita seasoning. Mix all well to combine and set aside for about 15-30 minutes.
Heat olive oil over medium heat in a large skillet. Add garlic and cook for 30 seconds but be careful to not burn it. Add the chicken and cook for 10-15 minutes or until the chicken is cooked through. Stir occasionally. Set aside.
In the same skillet, pour more olive oil (if necessarand add onions, bell peppers and the rest of the fajita seasoning.
Stir fry for 5-10 minutes on medium heat. The time will depend on how tender you prefer your veggies to be. Bring the chicken into the skillet again and mix everything well to combine.