Preheat oven to 350 degrees Fahrenheit. Line a rimmed baking sheet with parchment paper.

Cut fish into two-inch chunks; place onto prepared baking sheet.

In a medium bowl, combine mustards with oil, honey, and garlic.

Spread one to two teaspoons of the mustard mixture onto top of each piece of fish. Top with a pretzel.

Bake, uncovered, for 12–15 minutes, or until salmon flakes easily when pierced with a fork. Serve hot or at room temperature.