Heat a grill pan or an outdoor grill on medium-high heat. Brush with avocado oil so your fish doesn't stick.
Season your salmon fillets with garlic salt and pepper on both sides and rub each with oil.
I like to let my fish sit in the seasonings on the counter for about 15 minutes while I work on something else.
Grill for 5-6 minutes on each side, or until grilled marks appear and the salmon is flaky.
Meanwhile, chop your salsa ingredients.
In a medium bowl, add all the salsa ingredients together with lime juice and cilantro; Season to your taste and toss well to combine.
Once the salmon is done cooking, serve it warm topped with your avocado salsa.
Enjoy!