In a large skillet, heat olive oil over medium heat. Add the diced red and green bell peppers, zucchini, and corn. Sauté for about 5-7 minutes until veggies are tender but still vibrant. Season with cumin, paprika, salt, and pepper. Stir to combine.
In a small saucepan over low heat, warm the black beans until heated through, about 3-5 minutes. Stir occasionally.
To serve, start with a base of cooked brown rice in each bowl. Layer on the sautéed veggie mixture and add the warmed black beans.
Top each bowl with sliced avocado, halved cherry tomatoes, and red onion. Sprinkle chopped cilantro over the top.
Add a wedge of lime on the side for squeezing over the bowls just before eating.
Notes
Feel free to customize with your favorite toppings.