Cut the avocados in half and the remove the pits, set one aside and discard the rest. Scoop out the centers of the avocados and place in a large mixing bowl.
Add in the lime juice, garlic powder, sea salt and pepper. Mash with a fork until relatively smooth (the consistency is up to you).
Using a spatula or a fork, fold in the jalapeño, red onion and cilantro. Season to taste.
Notes
You can easily add a ripe tomato to this recipe, just be sure remove the seeds and juices before chopping/adding.