01 - Preheat oven to 400°F.
02 - Stack corn tortillas and cut into sixths to create chip-sized wedges.
03 - Arrange tortilla wedges in 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 rack.
05 - Halve, pit, and scoop avocados into medium bowl. Mash gently with fork, leaving some texture.
06 - Add red onion, tomato, jalapeño, garlic, cilantro, lime juice, salt, and pepper. Stir to combine. Taste and adjust seasoning if needed.
07 - Transfer guacamole to serving bowl. Serve immediately with homemade chips.