Heat 2 Tablespoons canola oil in a Dutch oven over medium heat. Add the minced onions and cook until softened, about 5 minutes.
Increase the heat to medium-high and add 2 pounds ground turkey breaking up any large pieces with your spoon. Cook until the turkey has lost its pink color, stirring often, about 5 minutes.
Stir in 2 Tablespoons tomato paste, the minced garlic, 2 Tablespoons minced chipotle in adobo, 1 Tablespoon chili powder, 1 Tablespoon cumin, 1 Tablespoon smoked paprika, 1 Tablespoon MSG-salt, and 1/2 teaspoon chipotle pepper powder. Continue cooking, stirring often, until any excess moisture has been cooked off, about 10 minutes.
Add 28 ounce canned diced tomatoes, 3 cups chicken broth, 24 ounce canned tomato sauce, and the drained, rinsed kidney beans. Increase the heat to high to bring to a boil, then reduce the heat to simmer. Continue to simmer, uncovered, stirring occasionally until the chili has reduced slightly and is thickened, about 30 minutes. Serve topped with shredded cheddar cheese, if desired.