Radish and Mexican shrimp appetizer

Name: Radish and Mexican shrimp appetizer
Ingredients: 1/2 large white onion, finely chopped; 1 garlic clove, minced; 1 teaspoon coriander powder; 1/4 teaspoon cumin powder; 1/4 teaspoon chipotle powder; 10 large sized shrimp (31-40 per lb), peeled and deveined; 1 pinch kosher salt; 1 ripe tomato, small diced; 1 tablespoon sourcream; 1 tablespoon cilantro, roughly chopped; 1-2 tablespoons olive oil, for sauteing; 5-6 radishes (I used Easter egg), sliced; 10 tortilla chips (scoops would also work great)