How to Make It
Heat a large saucepan over medium heat. Add 1 1/2 tablespoons oil; swirl to coat. Add onion; cook 3 minutes, stirring occasionally. Add garlic; cook 2 minutes, stirring frequently. Add 1 teaspoon turmeric and red pepper; cook 30 seconds, stirring constantly. Stir in water, lentils, and bay leaves; bring to a boil. Reduce heat, and simmer until thick and creamy, about 25 minutes. Discard bay leaves. Stir in 1/2 teaspoon plus 1/8 teaspoon salt. Gradually add spinach, stirring until spinach wilts.
Meanwhile, combine remaining 1/2 teaspoon turmeric, remaining 1/4 teaspoon salt, cumin, coriander, black pepper, and ginger. Sprinkle evenly over both sides of chicken thighs. Heat a large skillet over medium-high heat. Add remaining 1 1/2 teaspoons oil; swirl to coat. Add chicken to pan; cook 5 minutes on each side or until done. Serve chicken with lentil dal and tomatoes.