Place lentils, rice and quinoa in a strainer and rinse thoroughly. Heat coconut oil over medium heat. Add onion & garlic. Cook and stir until translucent (about 10 minutes). Add tomato paste, paprika, salt, pepper & red pepper flakes. Cook and stir 2-3 minutes. Add lentils, rice & quinoa. Toss to coat. Cook, stirring constantly, for 1-2 minutes. Add vegetable broth. Cover and simmer about 20-25 minutes, stirring occasionally, until lentils, rice & quinoa are tender. Add mint and remove from heat. Season to taste and serve with a squeeze of fresh lemon juice or small lemon wedges. Garnish with chopped herbs, if desired.