Caribbean Cobb Salad With Salmon

Name: Caribbean Cobb Salad With Salmon
Ingredients: 4 tsp. light brown sugar; 4 tsp. reduced-sodium soy sauce; 1 tbsp. onion powder; 2 tsp. garlic powder; 1 tsp. cayenne pepper; 1 tsp. dried thyme; 1 tsp. ground ginger; 0.5 tsp. ground allspice; 2 tbsp. plus 2 tsp. fresh lime juice, divided; 4 (4-oz.) salmon fillets; 0.667 c. canned coconut milk; 2 tsp. chopped fresh cilantro; 0.25 c. plus 2 tbsp. neutral oil, divided; 2 large heads of romaine lettuce, chopped; 1 mango, peeled, finely chopped; 1 large red bell pepper, seeded, finely chopped; 1 avocado, sliced; 4 scallions, sliced; 1 c. chopped purple cabbage; 1 c. plantain chips; 0.75 c. cotija cheese