Slow Cooker Chicken Corn Chowder

Name: Slow Cooker Chicken Corn Chowder
Ingredients: 4 slices thick-cut bacon; 3 medium boneless, skinless chicken breasts (cut into 1” pieces); 2 large red potatoes (diced into ½” cubes); 1 medium white onion (diced); 2 stalks celery (diced); 3 cups corn (frozen); 4 cups low-sodium chicken stock; 2 tsp minced garlic; 1½ tsp chili powder; 1 tsp ground cumin; 1 tsp kosher salt; ½ tsp dried oregano; ½ tsp paprika; ½ tsp black pepper; ½ cup half-and-half; 2 Tbsp corn starch; {for garnish} green onions (chopped); {for serving} bread bowls