My favorite goto for my fajita/taco style chicken is:
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Put the contents of entire can in a blender and add 1 cup olive oil and 1/2 cup white vinegar (1/2 cup of olive oil and 1/4 cup white vinegar, for spicy) as well as about 3 or 4 tablespoons of my taco seasoning, or you could use any rub or taco seasoning you like.
My taco seasoning:
2 parts chili powder
2 parts cumin
2 parts paprika
2 part garlic powder
2 part onion powder
2 part black pepper
1 part cayenne pepper
1 part oregano
1 part salt
Blend it all until it's smooth and put in a container to stay in the fridge. I love this because I can make it and it lasts for 4 or 5 cooks. I've used it on chicken, pork chops, and pork loins.
When it's time for chicken or pork, I scoop out about 3 or 4 tablespoons of the mixture into a bowl to let it warm back up into a liquid then I brush it on all sides of the meat at least 30 minutes prior to grilling, but have done overnight as well.
This is what I came up with when my daughter was obsessed with Qdoba chicken and wanted me to recreate it. It's pretty spot on.