Cafe Rio Chicken

(disclaimer: I've never actually been to Cafe Rio, so I really have no idea if this even tastes the same! But I thought it was good, nonetheless!)

6 chicken breasts
1 small bottle of italian dressing
1 Tbsp. chili powder
1 tsp. garlic powder
2 pkg. Ranch dressing mix
1 cup water
1 Tbsp. cumin

Mix all ingredients together in a slow cooker. Cook on low 6-8 hours. Remove chicken and shred with fork. Return to liquid in crock pot. Serve in flour tortillas with grated cheese.