In a large dutch oven, brown the turkey until it is fully cooked and there is no pink left on the meat (meat should reach internal temp of 165 Fahrenheit).
Remove meat, drain any grease, and set aside.
In the dutch oven, heat the olive oil in a pot and add the onion and garlic. Sauté for 5-6 minutes until the vegetables begin to soften.
Add the bell peppers, zucchini, and butternut squash and sauté for an additional 5 minutes.
Add the tomatoes and remainder of the spices, and add the meat back to the pot. Simmer on low heat for 1-2 hours, stirring occasionally.
Taste and adjust seasonings - adding salt, pepper, or more crushed red pepper flakes if necessary. Serve with cilantro, sliced avocado, sour cream, or tortilla chips!