In a 12” skillet, over medium-high heat, melt butter until foaming. Add the minced garlic and chipotles and cook until fragrant, about 1 minute.

Stir in 1/2 cup of cilantro, orange juice, and Worcestershire sauce. Bring to a boil, then add the chicken. Reduce heat to medium-low, cover chicken and simmer until the chicken registers 160 to 165 degrees on an instant read thermometer, about 10 to 15 minutes, flip the chicken half way through.

Transfer cooked chicken to a plate and tent with foil.

Increase heat to medium-high, add the lime juice and cook until the liquid is reduced to 1/4 cup, about 2 to 3 minutes. Remove from heat and whisk in the yellow mustard. Shred the chicken into bite sized pieces and return to the skillet. Add the remaining cilantro, and toss until everything is well combined and chicken is coated in the sauce. Season with salt and pepper to taste. Serve on warm tortillas and with toppings of your choice.