Preheat your oven to 400°F (200°C) and line a small baking sheet with parchment paper.
Slice the bell peppers and red onion into thin strips, and quarter the cremini mushrooms.
Toss the peppers, onions, and mushrooms with the extra virgin olive oil, half of the sea salt, and half of the black pepper on the baking sheet.
Roast the vegetables for 15-18 minutes until the edges are tender and slightly caramelized.
While vegetables roast, bring a small pot of water to a boil, gently lower the egg in, and simmer for 7 minutes for a jammy yolk.
Transfer the egg to an ice bath for 3 minutes, then peel and slice it in half.
Scoop the cottage cheese into a wide bowl and spread it into an even layer.
Dice the cucumber into small cubes and thinly slice the avocado.
Arrange the roasted vegetables, jammy egg halves, cucumber, and avocado over the cottage cheese base.
Garnish the bowl with everything bagel seasoning, remaining salt and pepper, and freshly minced chives.