Add ground turkey breast, diced onion, bell pepper, garlic, and zucchini to slow cooker
Add diced tomatoes, chicken broth, tomato paste, and taco seasoning
Season with salt and pepper
Add optional chipotle pepper in adobo sauce if desired
Cook on slow cooker setting until turkey is cooked through
Serve over crispy romaine
Top with non-fat Greek yogurt, cilantro, and avocado
Garnish with lime wedge and hot sauce
