Pop the popcorn: Heat the avocado oil in a large pot over medium-high heat. Add the popcorn kernels and cover the pot with a lid. Once the kernels start popping, gently shake the pot occasionally to ensure even popping. When the popping slows down, remove the pot from the heat and let it sit for a minute to allow any remaining kernels to pop. Transfer the popped popcorn to a large bowl.

Prepare the toppings: In a small bowl, mix the mayonnaise, lime juice, pinch of salt, and lime zest. Mix until well combined. In a separate bowl, mix the garlic powder, cilantro, cumin, salt and chili powder

Combine the popcorn and toppings: Add the popcorn to a large bowl and pour the mayo and spice mixture over the popped popcorn. Add a lid and shake until evenly coated. Sprinkle with grated cotija cheese or feta cheese

Season to taste: Taste the popcorn and add salt if needed. Remember that cotija cheese is salty, so you may not need much additional salt.