Quick and Easy Fiesta Chowder

Name: Quick and Easy Fiesta Chowder
Ingredients: 3 T all-purpose flour; 1 (1.4 oz) package fajita seasoning, divided; 3 large boneless chicken breasts; 3 T vegetable oil or olive oil; 1 medium onion, chopped; 1 tsp minced garlic; 1 (15 1/4 oz) can of corn; 1 (15 oz) can of black beans, rinsed and drained; 1 (10 oz) can of Rotel tomatoes; 1 (4.5 oz) can of chopped green chilis; 3 cups water; 1 cup uncooked instant brown rice; 1 (2 1/2 oz) can sliced ripe olives; 1 (10 3/4 oz) can cheddar cheese soup