Cauliflower Rice Tabbouleh

Name: Cauliflower Rice Tabbouleh
Ingredients: 1/2 medium head of cauliflower (about 1 pound), coarsely chopped; 5 tablespoons extra-virgin olive oil, divided; 1 teaspoon (or more) kosher salt, divided; 2 cups (packed) flat-leaf parsley leaves with tender stems; 1 cup (packed) mint leaves; 2 scallions, white and pale-green parts only, sliced; 1 garlic clove, coarsely chopped; 1 teaspoon finely grated lemon zest; 3 tablespoons fresh lemon juice; 1/4 teaspoon crushed red pepper flakes; 1/2 medium cucumber (about 8 1/2 long), cut into 1/4 pieces; 6 ounces cherry tomatoes, quartered