Cheesy Spicy Mexican Chorizo Meatball Soup

Soup:
2 TBS olive oil
2 TBS butter
1/2 cup onions, chopped
3 cloves roasted garlic
1/2 cup celery
32 ozs chicken broth (or veggie broth)
1/4 tsp cumin
1/4 tsp chili powder
16 ozs tomato salsa
1 large chipotle in sauce, diced
8 ozs four cheese Mexican blend
2 cups packed fresh spinach
1/2 cup cilantro, fresh chopped
1 cup cooked couscous
8 ozs green salsa (for garnish)
2 TBS lime juice, plus lime slices for garnish


Meatball mixture:
1 lb chicken tenders, ground
3 links chorizo
3 cloves roasted garlic
1/4 tsp cumin
1/4 tsp chili powder
2 TBS lime juice
1/3 cup cilantro, chopped
salt and pepper, to taste