Prepare the marinade (combine lime juice, olive oil, jalapenos, agave syrup, tequila, salt, pepper, oregano, and cumin)
Reserve ¼ cup of the marinade to the side
Pour the marinade over the chicken and refrigerate 4 hours up to overnight
Grill chicken over medium high on a grill pan heat for 6 minutes on one side
Flip and pour the reserved marinade over the chicken (if using an actual grill with open flame, be careful because there is tequila in the marinade!)
Cook chicken until internal temperature is 165. Set side.
In a skillet add 1 tablespoon olive oil and saute peppers and onions over medium high heat until tender. About 5-7 minutes
Assemble the fajitas with peppers/onions, sliced chicken, flaky sea salt, and pickled jalapenos or onions
Enjoy!