Heat oil (or vegetable broth) in pot over medium-high heat.
Add onion, green bell peppers, jalapeño peppers, and garlic. Cook, stirring frequently, until onions are translucent, about 5 minutes
Add cooked lentils, shredded carrots, diced tomatoes, pumpkin, tomato paste, water, chili powder, smoked paprika, cumin, salt and pepper. Bring to a boil.
Reduce heat to medium-low and add beans.
Cover and simmer for about 30 minutes to allow flavors to blend.
Taste and adjust seasonings accordingly. If you like your chili on the sweeter side, add the maple syrup and stir to combine.
If you like your chili soupier, add the vegetable broth and stir to combine.
Serve and enjoy with your favorite chili toppings.