1.Place Red Snapper In A Shallow Baking Dish. 2.Combine Lime Juice, Lemon Juice And Chili Powder In Small Bowl And Sprinkle Over Snapper. 3.Marinate 10 Minutes, Turning A Few Times. 4.Meanwhile, Preheat Oven To 350?. 5.Sprinkle Chopped Onions, Tomato And Peppers Over Snapper. 6.Cover And Bake For 20-30 Minutes Or Just Until Snapper Flakes In Center. 7.Let Stand, Covered, 4 Minutes Before Serving. 8.Garnish With Fresh Cilantro.