01 - Combine olive oil, lemon juice, minced garlic, oregano, cumin, smoked paprika, salt, and pepper in a shallow dish. Add the flank steak, turning to coat evenly. Let marinate for at least 15 minutes, or up to 2 hours for deeper flavor penetration.
02 - Rinse the rice under cold water until the water runs clear. Bring 2 cups of water to a boil in a medium saucepan. Add the rice and salt, reduce heat to low, cover, and simmer for 12 to 15 minutes until tender. Remove from heat, fluff with a fork, and fold in the chopped parsley, dill, and mint.
03 - While the rice cooks, halve the cherry tomatoes, dice the cucumber, thinly slice the red onion, halve the Kalamata olives, crumble the feta cheese, and slice the roasted red peppers. Arrange on a platter or separate containers for easy assembly.
04 - Whisk together the Greek yogurt, lemon juice, olive oil, minced garlic, and chopped fresh dill in a small bowl until smooth and creamy. Season with salt and pepper to taste. Refrigerate until ready to serve.
05 - Preheat a grill pan or skillet over medium-high heat. Remove the steak from the marinade and pat dry with paper towels. Grill for 3 to 4 minutes per side for medium-rare, or until internal temperature reaches 130°F to 135°F. Transfer to a cutting board and let rest for 5 minutes before slicing thinly against the grain.
06 - Divide the herbed rice evenly among 4 serving bowls. Arrange the sliced steak, cherry tomatoes, cucumber, red onion, olives, feta cheese, and roasted red peppers on top of the rice in sections. Drizzle generously with the yogurt sauce and serve immediately.