Heat 3 tablespoons of olive oil in a large pot over medium heat. Add chicken thighs, seasoning with oregano, paprika, salt, and red pepper flakes. Cook until browned on both sides, about 5-6 minutes per side. Remove and set aside.
Stir in cooked jasmine rice, chickpeas, 2 tablespoons of lemon juice, and a pinch of oregano. Mix well to combine. Return the chicken to the pot, nestling it into the rice mixture.
Cover the pot and simmer on low heat for 10-12 minutes, allowing the flavors to meld and the chicken to cook through.
Stir in chopped spinach and diced feta cheese. Cook until the spinach wilts, about 2-3 minutes. Drizzle with the remaining tablespoon of lemon juice and adjust seasoning if needed.
Notes
Optional: Garnish with fresh oregano for a fresh, herby finish.