Heat 1 tsp olive oil in your skillet over medium heat. Add the minced garlic and sauté for about 1 minute until fragrant but not browned.
Add the shredded chicken and stir to coat with the garlic and olive oil. Sprinkle in the chili powder and a pinch of salt, cooking for another 2-3 minutes to let the spices meld with the chicken.
In a large mixing bowl, combine the softened cream cheese, sour cream, and creamed corn. Use a spatula to blend until smooth and creamy.
Fold in 1 1/2 cups of the Mexican blend cheese and the diced tomatoes. Gently mix to distribute all ingredients evenly without breaking up the tomato chunks too much.
Add the seasoned shredded chicken to the creamy mixture and stir until everything is well incorporated.
Transfer the dip mixture to your baking dish or oven-safe skillet. Sprinkle the remaining 1/2 cup of Mexican blend cheese on top.
Bake at 350°F (175°C) for about 20 minutes, or until the cheese is melted and the dip is hot and bubbly.
Remove from the oven and let cool slightly. Top with your favorite garnishes like sour cream, sliced olives, and fresh cilantro. Serve warm with tortilla chips or veggies for dipping.