Scorch the poblano peppers over an open flame (if you have a gas cooktop), or roast them in a 400° (204 °c) oven until the skins are black and blistered and the peppers have softened. Let cool.
Toast the pepitas in a pan on medium heat for approximately 4 to 5 minutes or until they’re lightly browned. Shake frequently to avoid scorching. Sprinkle a pinch of sea salt on top and let cool.
Shred the jicama and carrots in a food processor, use the shredding blade. If you don’t have a food processor, use a box shredder or slice into thin matchsticks with a knife.
Scrape the blackened skin off of the peppers and remove the seeds. Slice into thin matchsticks and then slice the matchsticks into 2 inch (6 cm) long pieces.
Put the jicama, carrots, poblano peppers, pepitas, cilantro, and sea salt to taste in a medium bowl and make the dressing.