01 - Rinse quinoa thoroughly with cold water. In a medium saucepan, combine quinoa and water. Bring to a boil, then reduce heat to low, cover, and simmer for 14 to 15 minutes until water is absorbed. Remove from heat and let stand, covered, for 5 minutes. Fluff with a fork and allow to cool to room temperature.
02 - Preheat grill or grill pan to medium-high heat. Lightly brush pineapple rings with olive oil. Grill each ring for 2 to 3 minutes per side until caramelized and marked. Let cool, then chop into bite-sized pieces.
03 - In a large mixing bowl, combine cooled quinoa, grilled pineapple chunks, cherry tomatoes, red onion, avocado, and chopped cilantro. If desired, add minced jalapeño.
04 - In a small bowl, whisk together extra-virgin olive oil, lime juice, honey or agave, sea salt, and black pepper until emulsified.
05 - Pour dressing over combined ingredients. Gently toss until ingredients are evenly coated. Sprinkle toasted pumpkin seeds over the top if desired.
06 - Serve chilled or at room temperature on a platter or in individual bowls.