Mix together the lime juice, chili powder, olive oil, garlic, cumin and honey. Let sit while you coat a baking sheet with olive oil.
Rinse the salmon fillets and pat them dry. Place skin side down on the baking sheet.
Cut the peppers and onion into bite sized pieces.
Brush half of the lime juice and chili mixture onto the fillets. Put the onion and pepper into the mixture, let the pieces drip off over the bowl, and then place them on the baking tray.
Bake at 350° in the oven or on the grill for 15 to 18 minutes, until the salmon flakes apart. If you use the grill, keep the salmon and vegetables on the baking sheet.