01 - Preheat the oven to 400°F.
02 - Stack the corn tortillas and cut them into sixths to create chip-sized wedges.
03 - Arrange the tortilla wedges in a single layer on two large baking sheets. Brush both sides lightly with oil and sprinkle with sea salt.
04 - Bake for 10-15 minutes, flipping halfway, until golden brown and crisp. Let cool on a rack.
05 - Halve, pit, and scoop out the avocados into a medium bowl. Mash gently with a fork, leaving some texture.
06 - Add the red onion, tomato, jalapeño, garlic, cilantro, lime juice, salt, and pepper. Stir to combine. Taste and adjust seasoning if needed.
07 - Transfer the guacamole to a serving bowl. Serve immediately with the homemade chips.