Mexican Cheesy Chicken Chowder

Name: Mexican Cheesy Chicken Chowder
Ingredients: 1 tablespoon olive oil; 1 yellow onion (diced); 2 cloves garlic (minced); 2 green peppers (diced (about 1 cup)); 1 1/2 pounds boneless skinless chicken breasts (cubed (small cubes...bite sized pieces)); 32 ounces low sodium chicken broth; salt and pepper to taste; 1 package frozen diced hash-brown potatoes (32 ounce package); 1 packet country gravy mix (2.64 ounce packet); 2 cups heavy cream (or milk...but lets be honest...the creamier the better :); 12 ounces Velveeta (cut into small chunks); 2 cans Rotel Tomatoes (10 ounce cans); 1/4 cup chopped fresh cilantro; Sour cream (Fritos, or Tortilla Chips for garnish)