Peel the cucumber, and remove the inner section with the seeds.
Cut the firmer cucumber flesh into small dice pieces, and set aside in a medium- sized mixing bowl.
Add the Kosher salt, and stir to mix the salt evenly over the cucumber.
Allow the salted cucumbers to sit for ten minutes, and then drain the water from the cucumbers.
Add the diced red onion, lemon zest, lemon juice, drained chickpeas, Togarashi spice blend, freshly-ground black pepper, ground cumin, Kosher salt, olive oil, and crumbled Feta cheese, and stir to combine.
Add the finely-sliced mint before serving, and stir again to gently combine.
When you are ready to serve, add a spoonful or two of the spicy chickpea and cucumber mixture inside each small cup of Romaine lettuce, and add a drizzle of olive oil on top at the end.
Serve immediately.