Preheat the oven to 400 degrees F. Set out a large rimmed baking sheet with parchment paper.
To a large bowl, add diced beets, drizzle with olive oil, and sprinkle with sea salt. Mix together until all ingredients are integrated. Add beets to the sheet pan in a flat layer.
Add beets to the oven. How long to roast beets in oven will vary a bit based on size of the chunks. My technique is to bake beets for 15 minutes. Flip them around with a spatula and bake for another 5-10 minutes or as long as desired until beets roast to your desired level of doneness. They should be fork tender and starting to brown around the edges.
Transfer oven roasted beets to a serving platter and sprinkle with parsley and goat cheese crumbles or squares, a crack of salt and pepper as desired, pumpkin seeds, and (optional) a squeeze of lemon juice.