Heat olive oil in a large pot over medium-high heat. Add the chopped onion, minced garlic, and diced bell pepper. Sauté for 5-7 minutes until softened, stirring occasionally.
Add the ground turkey and cook, breaking it up, until no pink remains, about 6-8 minutes.
Stir in chili powder, cumin, oregano, cayenne, and salt. Toast the spices for about 30 seconds, stirring.
Pour in the crushed tomatoes and chicken broth. Stir, bring to a simmer, then reduce heat to low.
Simmer uncovered for 20 minutes, stirring occasionally so nothing sticks.
Add the drained kidney beans and corn during the last 10 minutes of cooking. Stir and heat through.
Taste and adjust salt if needed. Remove from heat and let cool slightly.
Portion into meal prep containers while still warm. Cool completely before sealing and refrigerating or freezing; for faster cooling, set the pot in an ice bath and stir occasionally.