Citrus Marinated Grilled Salmon with Tabbouleh

Name: Citrus-Marinated Grilled Salmon with Tabbouleh
Ingredients: 1 Cup uncooked bulgur wheat; 1 1/2 Cup boiling water; Zest and juice of 2 lemons; 3 Tablespoons olive oil; 1 1/2 Cup chopped flat-leaf parsley; 1/2 Cup finely chopped chives; 1/2 Cup finely chopped red onion; 1/4 Cup finely chopped mint; Salt and pepper, to taste; 3 Tablespoons olive oil, plus more for the grill; Zest and juice of 1 orange; Five 6-ounce boneless, skin-on salmon fillets; 1/3 Cup finely chopped red onions; 2 tomatoes, chopped, or 1 cup cherry or grape tomatoes, halved; 1 cucumber, peeled, seeded, and chopped; 1 Tablespoon lemon juice