Add the pepper, garlic, and salt. Squeeze in the lemon juice and mix well. Let it marinate for about 15 minutes while you slice the onions.

After marinating, heat olive oil in a pan. Add the chicken and cook until done.

Once the chicken is cooked and the liquid has evaporated, add the onion strips. Cook until the onions are translucent, then serve.

Note: You can serve the fajitas with vegetables.

Or you can also serve them with rice and corn.