Slice zucchini, bell peppers, red onion and delicata squash into even-sized pieces. Coat baking sheets in olive oil and arrange vegetables on baking sheets. Place in the oven to roast- about 15-20 minutes.
Make guacamole by combining avocado, cilantro, red onion, red pepper flakes, salt and pepper, smashing with a fork as you go.
Arrange quinoa, spinach and roasted vegetables in bowls. Top with black beans, chopped tomatoes and guacamole and spritz with a little lime or lemon juice.