My mom shared this marinade with me for chicken tacos. I haven't tried it yet, but it got rave reviews from my family!
This works for four chicken breasts.
Cut chicken into thin strips and marinade in:
1/4c. lime juice (or more!)
couple t. garlic
1/3 c. olive oil
1 t. cumin
1 t. oregano
1 t. parsley
Marinate it for at least one hour. Cook the chicken on the stove (my mom used her wok).