Preheat oven to 350°F.
In a large pan, add water and salt. Add chicken. Bring to a boil over medium/high heat, then reduce heat to low and simmer about 15-20 minutes until the chicken is no longer pink and reaches 170°F. Drain.
In a medium pan, add olive oil and saute onions and garlic until tender. Set aside.
Once chicken is cooked and cool enough to handle, shred and add to medium sauce pan.
Add 1 can of green chili enchilada sauce, onions, garlic, jalapenos and ⅔ can of olives to shredded chicken.
Cook on low heat until ready to use. Stirring occasionally.
In another medium sauce pan, add remaining cans of enchilada sauce and cook on low heat, stirring occasionally.
In a 9 X 13 baking dish, add enchilada sauce to cover bottom, approximately 1 cup.
Take a tortilla, dip into pan that has the enchilada sauce, then place tortilla on a plate.
Spread 1 Tbsp sour cream down middle of tortilla.
Spread ½ cup chicken filling on top of sour cream.
Sprinkle ¼ cup of pepper jack cheese over chicken filling.
Roll tortilla up, put in baking dish seam side down.
Repeat with remaining tortillas, and arrange as needed, until baking dish is full.
You can layer your enchiladas or use two 9 X 13 baking dishes.
Once baking dish is full, pour only enough green sauce to cover enchiladas.
*For any leftover sauce that is not needed, save for extra sauce or discard.
Add remaining cheese and sliced olives on top of enchiladas.
Cover with foil. Cook for 20-30 minutes for single layer, 40-50 minutes for double layer, or until hot and bubbly. Remove foil and cook for an additional 5-10 minutes until the cheese browns.
*Put a cookie sheet under baking dish to catch any liquid that might spill over during cooking.
Remove from oven and let stand 10 minutes before serving.
Serve with rice and beans. Garnish with a dollop of sour cream, cilantro and green onions.