Add the avocado oil, garlic, salt, cumin, lime juice, honey, and cilantro to a blender or food processor.
Blend on low until just combined for a slightly textured sauce.
Place the chicken in the bottom of a 6-quart slow cooker.
Pour half of the cilantro lime sauce over the chicken, ensuring it is evenly coated.
Reserve the remaining sauce for later use.
Cover and cook on high for 3-4 hours, or on low for 5-6 hours, until the chicken easily shreds with a fork.
Remove the chicken to a cutting board. Shred it with a fork or chop into bite-sized pieces.
Return the shredded chicken to the crockpot. Stir in the cooking juices and the reserved sauce for maximum flavor.
Taste and adjust seasoning with additional lime juice or salt, if needed.
Serve with warm tortillas and desired toppings like guacamole, chopped onions, and jalapeño.