Prepare your ingredients: chop the chicken into bite-sized pieces, finely chop garlic, dice tomatoes, and drain corn.
In a large pan, bring two tablespoons oil to a sizzle over medium-high heat. Cook the chicken until lightly browned, adding ½ teaspoon of salt.
Remove the chicken from the pan. Reduce the heat to low. Add the remaining 1 tablespoon oil to the pan and add the garlic and red pepper flakes. Cook while stirring for 15 seconds. Add the tomatoes and simmer for 5 minutes.
Add the corn and cilantro to pan. Return chicken with any juices into the pan.