Preheat the oven to 400˚F.
Season chicken breast with sea salt and ground black pepper.
In a 4-6 qt sauce pan place the broth with the chicken, garlic, onion and bring to a boil. Reduce the heat to low, cover and cook chicken until cooked through, about 15-18 minutes. Remove the chicken from the broth and let cool. Strain the broth and save for another use.
Once the chicken has cooled enough to handle shred the breasts using two forks by holding one fork steady and slowly scraping the other fork, prongs faced backwards, away from the other fork.
Transfer the shredded chicken to a large bowl and add half the enchilada sauce from the pan, half the Monterrey jack and half the cheddar cheese.
Add ½ of cilantro to the shredded chicken. Stir to combine.
Wrap the whole wheat flour tortillas in a damp cloth or paper towel and microwave for 15-20 seconds on high until pliable and warm.
Grease an 8” x 8” casserole dish with conola oil. Spoon about ¼ cup of the chicken mixture along the center of a tortilla. Roll the tortilla around the filling and place into the baking dish, seam-side down. Repeat with remaining tortillas.
Pour the remaining sauce over the enchiladas and sprinkle the remaining cheese over the sauce.
Place casserole dish in the oven, uncovered, for 8-10 minutes until cheese is melted. Garnish with fresh cilantro
