Cook the grain of your choice according to package instructions. If you’re multitasking, start this first so everything finishes together.
Heat olive oil in a large skillet over medium heat. Add the onion and garlic. Sauté until soft and fragrant, about 3–4 minutes.
Toss in the bell pepper and cook for another 2 minutes. You want a little bite left for texture, not mush city.
Stir in tomatoes, chickpeas, spinach, paprika, cumin, and chili flakes. Cook until spinach wilts and flavors mingle, 2–3 minutes.
Season with salt, pepper, and lemon juice. Taste and adjust if you need a brightness boost or a pinch more heat.
Fold the cooked grain into the mix. Stir well so every bite gets a little sunshine. Heat through for 1–2 minutes.
Remove from heat and garnish with cilantro or parsley. Serve hot and enjoy the speedy rainbow in your bowl.