Preheat the oven to 325 degrees farenheit
In a sauce pan, bring water to a boil. Add chicken and cook until it reaches an internal temperature of 165 degrees (around 15-20 minutes)
Remove chicken and using two forks, shred it up (or add to your mixing stand with a hook attachment and let it do the shredding for you)
Heat the cooking fat in a skillet and sautee onions on medium until transluscent, stirring regularly to ensure they don't burn
Turn the heat to medium-low, add in the garlic and cook until fragrant (about 1-2 minutes)
Add the chicken, garlic, and onion to a bowl then top with the lemon juice, mayonaise and hot sauce. Stir to combine.
Transfer all ingredients to a casserole pan and place in the oven for 25 minutes
Remove from the oven and top with avocado and cilantro before serving with grain-free tortilla or plantain chips!