Slow Cooker Chicken Black Bean Tacos

raw skinless chicken tenders or breast

can low sodium black beans, drained and rinsed (Goya)

can tomatoes with mild green chiles (I used Rotel)

chili powder

plus 1/8th tsp ground cumin

garlic powder

oregano

medium scallion, diced

chopped cilantro (optional)

shredded red cabbage

red wine vinegar (or lime juice)

salt and black pepper,

crisp corn taco shells

pico de gallo

medium haas avocado, sliced