How to Make It
Combine lettuce, parsley, cucumber, tomatoes, and onion; set aside.
Grate 1 garlic clove. Whisk together lemon juice, 1 1/2 tablespoons water, pepper, grated garlic, 3 tablespoons tahini, 1 tablespoon olive oil, and 3/8 teaspoon salt; set dressing aside.
Chop remaining 2 garlic cloves. Process chickpeas in a food processor until almost ground, about 15 seconds. Add panko, cumin, paprika, chopped garlic, remaining 2 tablespoons tahini, and remaining 3/4 teaspoon salt; process until almost smooth, about 15 seconds, stopping to scrape down sides as needed. Add egg; pulse just until combined, 5 to 6 times. Shape mixture into 20 balls (about 1 slightly heaping tablespoon each).
Heat a large nonstick skillet over medium-high. Add remaining 3 tablespoons oil; swirl to coat. Add chickpea balls to skillet. Cook, turning occasionally, until browned all over and crisp on the outside, 8 to 10 minutes. Serve chickpea balls with salad; drizzle with tahini dressing. Serve immediately.