01 - In a medium saucepan, bring water or vegetable broth to a boil. Add farro or quinoa, reduce heat to low, cover, and simmer until tender (farro: 25 minutes; quinoa: 15 minutes). Drain any excess liquid and fluff with a fork. Set aside to cool slightly.
02 - While the grains cook, halve the cherry tomatoes, dice the cucumber and red bell pepper, and finely slice the red onion. Set aside.
03 - In a small bowl, whisk together the extra-virgin olive oil, lemon juice, minced garlic, dried oregano, sea salt, and black pepper until well combined.
04 - Divide the cooked grains among four bowls. Arrange spinach or arugula on one side of each bowl, then layer with chickpeas, cherry tomatoes, cucumber, bell pepper, and red onion.
05 - Sprinkle each bowl with crumbled feta cheese, Kalamata olives, and fresh parsley. Drizzle generously with the lemon-herb dressing. Serve immediately, or chill for a refreshing cold grain bowl.