In a large soup pot, sauté leeks, garlic, jalapeño, and potatoes in ½ cup of vegetable broth over medium-high heat until vegetables are tender.
Add chickpeas, corn, coconut milk, and remaining vegetable broth. Bring to a boil and simmer for 15 minutes until potatoes are tender and soup has thickened. Season with salt and pepper flakes.
Serve hot.
Notes
Slice and wash the leeks very carefully, as they have a tendency to be sandy.If you prefer a thicker soup, add more vegetables and reduce the water.