Jicama-Mango Guacamole

3 Hass avocados, cut into 1/2-inch dice 1 medium plum tomato, seeded and cut into 1/4-inch dice 1/2 small onion, cut into 1/4-inch dice 3/4 cup finely diced ripe mango 1/2 cup finely diced peeled jicama 3 tablespoons finely chopped cilantro 1 medium chipotle in adobo, minced (1 tablespoon) 1 small jalapeño, seeded and minced 2 tablespoons fresh lemon juice Kosher salt Tortilla chips, for serving