Warm a large skillet over medium heat. Add the olive oil, then the onion and bell pepper.
Cook 3–4 minutes, stirring often, until softened. Add the garlic and jalapeño, and cook 30 seconds, just until fragrant.
Add the ground turkey. Break it up with a spatula and cook 5–7 minutes until no longer pink.
If excess liquid accumulates, spoon off a bit so the turkey browns, not steams.
Sprinkle in the chili powder, cumin, smoked paprika, oregano, salt, and black pepper. Stir to coat the turkey and veggies. Cook 1 minute to bloom the spices.
Add the riced cauliflower, black beans, corn, and diced tomatoes with their juices.
Pour in the chicken broth. Stir well to combine and bring to a gentle simmer.
Reduce heat to medium-low. Cover and cook 6–8 minutes, stirring once or twice, until the cauliflower is tender and the mixture thickens slightly.
If it looks dry, add a splash more broth; if saucy, uncover for the last 2 minutes to reduce.
Stir in the lime juice. Taste and adjust seasoning with more salt, pepper, or chili powder as needed. If using cheese, sprinkle it over the top and let it melt for 1–2 minutes.
Finish with chopped cilantro.
Serve hot as is, or spoon into tortillas, over lettuce for a taco salad, or with chips for scooping. Add your favorite toppings.