1Bring 2 1/2 cups water to a boil in a saucepan. Stir in the instant brown rice, cover, and cook 10 minutes until the water is absorbed. Fluff with a fork.
2While rice cooks, juice both lemons into a small bowl. Whisk in olive oil, oregano, salt, and pepper.
3Toss the shredded rotisserie chicken with half the lemon dressing and let it warm through.
4Divide rice among four bowls. Top each with dressed chicken, cucumber, tomato, olives, red onion, and feta. Drizzle with remaining dressing and serve.