Whisk together the marinade/sauce ingredients: garlic, ginger, olive oil, gluten free tamari or soy sauce, honey, gluten free sriracha, orange juice, rice vinegar, tomato paste, paprika, and red pepper flakes. Dry the salmon fillets well with paper towels. Salt and pepper the fillets. Add the fillets to a casserole dish.
Pour half of the marinade over the pieces of salmon, coating well on each side. Reserve the remaining marinade/sauce to finish the fish after cooking. Cover the dish and move to the refrigerator for 2-3 hours to marinate.
Remove the fish a half hour prior to cooking. Coat the fish with the marinade from the casserole dish.
Preheat the oven to 365 degrees F. Heat a skillet or cast iron over medium high heat with a tablespoon of olive oil. Remove the fish pieces from the marinade letting the excess drip off and place “pretty side” down in the pan without disturbing. Sear each fillet for 2-3 minutes until browned and crisp before carefully turning over with a very large spatula and searing on the other side of each fillet. The sugars will begin to caramelize in the pan.
Move the skillet to the oven or transfer the fish carefully to a foil lined casserole Pyrex dish, before moving to the oven. Bake for 8-11 minutes depending on the fish size. The fish should flake on the edge. Spoon heated reserved marinade/sauce to the top of the fish, then add the chives and sesame seeds. Serve over or beside white or brown rice.