2 teaspoons extra-virgin olive oil
3/4 pound peeled and deveined medium shrimp, chopped
1/2 teaspoon salt, divided
1/2 teaspoon black pepper, divided
1/4 teaspoon ground cumin
1/4 teaspoon paprika
2 cups quartered grape tomatoes
1/3 cup fresh cilantro
2 1/2 cups chopped English cucumber
1 cup fat-free, lower-sodium chicken broth
1 cup whole-milk plain Greek yogurt
1/4 cup chopped onion
2 tablespoons fresh lime juice
Dash of ground red pepper
1 large garlic clove, peeled